# List of Metrobus routes in Maryland

This is a list of bus routes operated by the Washington Metropolitan Area Transit Authority (WMATA), branded as Metrobus in Montgomery County, Maryland or Prince George's County, Maryland. Most routes operated under Streetcars in Washington, D.C., and Maryland prior to the 1960s.

## Numbering

Most Metrobus routes in MD begin with a letter followed by a number but some routes can have a double digit numbers. Prince Georges County routes would typically have a letter followed by two numbers.
Odd-numbered routes are typically part-time variants of even-numbered routes. At one time, odd numbered routes were express routes, but that distinction has been abandoned. Most odd-numbered routes operates during rush hours and or limited stops with a few of them running into the off peak hours.

## History

Many current routes operate under former streetcar routes. The streetcars provided the main transportation in the Maryland area from the 1800s to the 1960s. Two separate companies, Washington, Virginia and Maryland Coach Company (WV&M), and the Washington Marlboro and Annapolis Motor Lines (WM&A) would also operate on the former streetcar routes and provide service to parts of MD when the Streetcars ended service. In 1973, WMATA acquired the two bus companies along with other bus companies to form its current Metrobus system. At one point, most MD routes would enter into Downtown before Metro was built in which all buses would terminate at stations in various locations. Today, the main MD hub is at Silver Spring station
When Ride On began service, most Metrobus routes in Montgomery County were slowly transferred into Ride On routes through the years as it would be cheaper to operate under another carrier. Same thing went with TheBus.
Due to the COVID-19 pandemic, service was mostly reduced to Sunday service schedules during the weekdays with select routes suspended from March 18, 2020, until August 22, 2020. Routes 83, A12, C4, D12, F4, J2, K6, P12, T18, Y2, and Z8 were the only routes that ran during the weekends with the rest of the routes suspended. Beginning on August 23, 2020, more routes came back during the weekdays and weekends returning Metrobus service to 75% Most service and routes resumed on September 5, 2021.
On November 21, 2024, WMATA approved its Better Bus Network Redesign, which began in 2022. Under the plan, all routes will be renamed with easier to understand route designations, and modify most of its existing routes with the goal of making the bus system easier to use, faster, and more reliable. Changes are expected to start on June 29, 2025. All Maryland routes will be renamed with an M (for Montgomery County routes) or P (for Prince George's County routes) route designation.

## Routes

Most Maryland buses would remain inside Prince Georges County and Montgomey County. However a few routes would enter into Washington DC which was a part of their former streetcar lines. Only one current route operates between Maryland and Virginia (NH2).
| Route | Terminals | Terminals | Terminals | Streets traveled | Service notes | Divisions |
| 83, 86 College Park Line | Rhode Island Avenue–Brentwood station | ↔ | 83 Cherry Hill Park Campground 86 Calverton (4061 Center Park Roadway) | U.S. Route 1 Baltimore Avenue Rhode Island Ave | Early morning and late night 83 trips operate between Rhode Island Avenue and Mount Rainier daily. | Landover |
| 89M Laurel Line | South Laurel Park & Ride Lot | ↔ | Greenbelt station | Cherrywood Lane Kenilworth Avenue Edmonston Road Baltimore Avenue | Weekday service only | Landover |
| A12 Martin Luther King Jr. Highway Line | New Carrollton station (East Side) | ↔ | Addison Road station (Monday-Saturday) Capitol Heights station (Sundays Only) | Martin Luther King Jr Highway Addison Road | A12 trips end/begin at Capitol Heights station on Sundays only, replacing the F14 segment between the Capitol Heights and Addison Road stations. | Landover |
| B21, B22 Bowie State University Line | Bowie State University | ↔ | New Carrollton station (East Side) | Laurel-Bowie Road John Hanson Highway | Weekday service only | Landover |
| B24 Bowie-Belair Line | Bowie Park & Ride Lot | ↔ | New Carrollton station (West Side) | Annapolis Road | Weekday service only | Landover |
| B27 Bowie–New Carrollton Line | Bowie State University | ↔ | New Carrollton station (West Side) | Lanham-Severn Road | Weekday peak hour service only | Landover |
| C2, C4 Greenbelt–Twinbrook Line | C2 Wheaton station C4 Twinbrook station (East side) | ↔ | C2 Greenbelt station C4 Hyattsville Crossing station | University Boulevard Greenbelt Road (C2) Baltimore Avenue (C2) Riggs Road (C4) East-West Highway (C4) | C2: Sunday trips only operates between Takoma Langley Crossroads Transit Center and Greenbelt station. Some weekday and Saturday late night C2 trips are extended from Wheaton station to Twinbrook station. | Montgomery |
| C8 College Park–North Bethesda Line | North Bethesda station | ↔ | College Park–University of Maryland station | Randolph Road New Hampshire Avenue Adelphi Road | No Sunday service | Montgomery |
| C11, C13 Clinton Line | Clinton Park & Ride Lot | ↔ | Branch Avenue station | Branch Avenue | Weekday peak hour service only C11: AM to Clinton, PM to Branch Avenue (Express) C13: AM to Branch Avenue, PM to Clinton (Local) | Andrews Federal Center |
| C12, C14 Hillcrest Heights Line | Naylor Road station | ↔ | Branch Avenue Station | Branch Avenue Old Branch Avenue Iverson Street (C12) | C12: Weekday peak hour service only (AM to Naylor Road, PM to Branch Avenue) C14: No Sunday service | Andrews Federal Center |
| C21, C22, C26, C29 Central Avenue Line | C21, C22 Collington Center C26 Bowie Park & Ride Lot C29 Bowie State University (Saturdays only) C29 Pointer Ridge (Hall Road & Central Ave) (Sundays only) | ↔ | C21, C22, C29 Addison Road station C26 Downtown Largo station | Central Avenue | C21: Weekday Peak Hour Service Only (AM to Collington Center, PM to Addison Road station) C22, C26: Weekday service only C29: Weekend service only; Saturday service is extended to Bowie State University, Sunday service ends at Pointer Ridge | Landover |
| C27 Central Avenue Line | Pointer Ridge (Hall Road & Central Ave) | ↔ | Addison Road station | Central Avenue | Operates between Memorial Day weekend through Labor Day weekends only. Provides extra service for Routes C21, C22, C26, and C29 during the summer | Landover |
| D12 Southern Ave–Suitland Line | Suitland station | ↔ | Southern Avenue station | St. Barnabas Road | | Andrews Federal Center |
| D14 Oxon Hill–Suitland Line | Suitland station | ↔ | Southern Avenue station | Brinkley Road Allentown Road Indian Head Highway Oxon Hill Road | | Andrews Federal Center |
| F1 Chillum Road Line | Takoma station | ↔ | Cheverly station | Chillum Road Eastern Avenue Landover Road | | Landover |
| F4 New Carrollton–Silver Spring Line | Silver Spring station (Paul S. Sarbanes Transit Center) | ↔ | New Carrollton station (West Side) | East-West Highway Philadelphia Avenue Riverdale Road Queensbury Road | | Landover |
| F6 New Carrollton–Fort Totten Line | Fort Totten station | ↔ | New Carrollton station (West Side) | East-West Highway Sargent Road | Weekday Service Only | Landover |
| F8 Langley Park–Cheverly Line | Takoma Langley Crossroads Transit Center | ↔ | Cheverly station | University Boulevard Adelphi Road Baltimore Avenue Landover Road | | Landover |
| F12 Ardwick Industrial Park Shuttle Line | New Carrollton station (East Side) | ↔ | Cheverly station | Pennsy Drive Landover Road Martin Luther King Highway | Weekday service only | Landover |
| F13 Cheverly–Washington Business Park Line | Washington Business Park (Forbes Blvd & Senate Drive) | ↔ | Cheverly station | Annapolis Road Whitfield Chapel Road Martin Luther King Jr. Highway | Weekday service only | Landover |
| F14 Sheriff Road–Capitol Heights Line | New Carrollton station (East Side) | ↔ | Naylor Road station | Sheriff Road Martin Luther King Jr Highway Larchmont Avenue Southern Avenue | No Sunday service | Landover |
| G12 Greenbelt–New Carrollton Line | Greenbelt station | ↔ | New Carrollton station (West Side) | Greenbelt Road Hanover/Princess Garden Parkway Annapolis Road | | Landover |
| G14 Greenbelt Road–Good Luck Road Line | Greenbelt station | ↔ | New Carrollton station (West Side) | Greenbelt Road Cipriano Road Annapolis Road | Early morning trips bypass Beltway Plaza during the weekdays. | Landover |
| H12 Temple Hills–Marlow Heights Line | Temple Hills (Heather Hills Apartments) | ↔ | Naylor Road station | St. Barnabas Road Branch Avenue | | Andrews Federal Center |
| J1, J2 Bethesda–Silver Spring Line | Montgomery Mall | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Old Georgetown Road MD Route 355 East-West Highway Jones Bridge Road (J1) Rockledge Drive (J1) Democracy Blvd (J2) Battery Lane (westbound AM rush only) | J1: Weekday peak hour service only (AM to Montgomery Mall, PM to Silver Spring) Westbound AM peak trips service Battery Lane between Rockville Pike and Old Georgetown Road. All other trips service Cedar Lane. | Montgomery |
| J12 Marlboro Pike Line | Forestville (8431 Old Marlboro Pike) | ↔ | Addison Road station | Central Avenue Larchmont Avenue Marlboro Pike | Weekday peak hour J12 trips serve the Presidential Corporate Center (Machinists Building). | Andrews Federal Center |
| K6 New Hampshire Avenue–Maryland Line | White Oak Shopping Center | ↔ | Fort Totten station | New Hampshire Avenue | | Bladensburg |
| K9 New Hampshire Avenue–Maryland Limited Line | Food & Drug Administration/Federal Research Center | ↔ | Fort Totten station | New Hampshire Avenue | Weekday peak hour service only | Montgomery |
| K12 Forestville Line | Branch Avenue station | ↔ | Suitland station | Allentown Road Silver Hill Road Forestville Road | | Andrews Federal Center |
| L8 Connecticut Avenue–Maryland Line | Aspen Hill (Grand Pre & Bel Pre Roads) | ↔ | Friendship Heights station | Connecticut Avenue | Weekend service operated by Ride On. | Montgomery |
| L12 Landover Road Line | Capital Plaza Mall | ↔ | Downtown Largo station | Landover Road | | Landover |
| NH1 National Harbor–Southern Avenue Line | Southern Avenue station | ↔ | National Harbor (St. George Boulevard & Waterfront Street) | Southern Avenue Owens Road Oxon Hill Road | | Andrews Federal Center |
| NH2 National Harbor–Alexandria Line | King Street–Old Town station | ↔ | National Harbor (St. George Boulevard & Waterfront Street) | I-495 Monument Avenue / MGM National Avenue | | Four Mile Run Shepherd Parkway |
| P12 Eastover–Addison Road Line | Eastover Shopping Center | ↔ | Addison Road station | Silver Hill Road Iverson Street | | Landover |
| P18 Oxon Hill–Fort Washington Line | Fort Washington Park & Ride Lot | ↔ | Southern Avenue station | Oxon Hill Road Southern Avenue | Weekday service only. Limited-stop segment between Southern Avenue station and Indian Head Highway. | Shepherd Parkway |
| Q2, Q4, Q6 Veirs Mill Road Line | Q2, Q6 Shady Grove station Q4 Rockville station (West Side) | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) (Q2, Q4) Wheaton station (Q6) | Veirs Mill Road Georgia Avenue (Q2, Q4) MD 355 (Q2, Q6) | Q2 service operates early mornings and late nights only, no midday service. Most daytime trips on Q2 and Q6 service Montgomery College, except on Sundays. | Montgomery |
| R1, R2 Riggs Road Line | R1 Adelphi (Riggs Rd & Edwards Way) R2 Calverton (Plum Orchard Drive & Healing Way) | ↔ | Fort Totten station | Riggs Road | R1: Weekday peak hour service only (AM to Fort Totten, PM to Adelphi) | Bladensburg |
| R4 Queens Chapel Road Line | Highview | ↔ | Brookland-CUA station | Queens Chapel Road Michigan Avenue NE | | Bladensburg |
| R12 Kenilworth Avenue Line | Deanwood station | ↔ | Greenbelt station | Kenilworth Avenue Edmonston Road | Weekday early morning trips bypass Beltway Plaza. No Sunday service | Landover |
| T2 River Road Line | Rockville station (east side) | ↔ | Friendship Heights station | Falls Road River Road | Weekend service operated by Ride On. | Montgomery |
| T14 Rhode Island Avenue–New Carrollton Line | New Carrollton station (West Side) | ↔ | Rhode Island Avenue - Brentwood station | Riverdale Road Edmonston Road Rhode Island Avenue NE | Early Weekday AM trips originate at Mount Rainier terminal. Limited-stop segment between Rhode Island Avenue station and Mount Rainier terminal. | Landover |
| T18 Annapolis Road Line | New Carrollton station (West Side) | ↔ | Rhode Island Avenue - Brentwood station | Annapolis Road Rhode Island Avenue NE | Limited-stop segment between Rhode Island Avenue station and Mount Rainier. | Landover |
| V12 District Heights–Suitland Line | Addison Road station | ↔ | Suitland station | Shadyside Avenue Marlboro Pike | | Landover |
| V14 District Heights–Seat Pleasant Line | Penn Mar Shopping Center | ↔ | Deanwood station | Walker Mill Road Central Avenue Addison Road | | Landover |
| W14 Bock Road Line | Fort Washington Forest (Old Fort Road & Indian Head Highway) Friendly (Allentown & Old Fort Roads) | ↔ | Southern Avenue station | Bock Road Southern Avenue | Weekday service only. Select weekday peak hour trips are extended to Fort Washington Forest Limited-stop segment between Southern Avenue station and Indian Head Highway. | Shepherd Parkway |
| Y2, Y7, Y8 Georgia Avenue–Maryland Line | Y2, Y8 MedStar Montgomery Medical Center Y7 Georgia Ave – ICC Park & Ride Lot | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Georgia Avenue | Y7: Weekday service only Y2 bypasses Leisure World and the ICC Park & Ride lot. Y8 operates via Leisure World, and bypasses the ICC Park & Ride | Montgomery |
| Z2 Colesville–Ashton Line | Olney (Spartan Rd & Georgia Ave) | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | New Hampshire Avenue Colesville Road | Weekday peak hour service only. | Montgomery |
| Z6, Z8 Silver Spring-Fairland Line | Z6 Burtonsville Shopping Center Z8 Greencastle Park & Ride Lot | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Briggs Chaney Road (Z8) Calverton Blvd (Z6) Old Columbia Pike Lockwood Drive Colesville Road | | Montgomery |
| Z7 Laurel–Burtonsville Express Line | South Laurel Park & Ride Lot | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Cherry Lane Sandy Spring Road Old Columbia Pike Columbia Pike Colesville Road | Weekday peak hour service only (AM to Silver Spring, PM to South Laurel Park & Ride) Express Service (Local fare) | Montgomery |

## Routes History

| Route | History |
| 83, 86 | Formerly known as the Rhode Island Avenue-Maryland Line (along with the former 84 & 85) and the Maryland Line 81, 82, 83, and 86 operate on portions of the old 82 Maryland Streetcar Line, which ran from West Potomac Park to Branchville until replaced by buses in 1958; they operate on the old route served by the 82 until 1993. 86 operates on portions of the old 84 & G6 Maryland Streetcar Line, which ran from Branchville to Beltsville until replaced by buses between 1949 & 1958. 81 was discontinued on March 27, 2016, and replaced by routes 83 and C2. 82 was discontinued on December 18, 2016, and replaced by route 83. |
| 89M | 89 originally operated between Mount Rainier terminal and West Potomac Park around the 1950s to 1960s. 89 used to operate between Rhode Island Avenue station until the Greenbelt station opened on December 11, 1993. Route 89 was suspended on March 23, 2020; later discontinued by September 5, 2021. |
| A12 | Route A12 is extended to Capitol Heights station on Sundays only replacing a portion of route F14. A11, A12 used to serve the former Landover Mall site until March 30, 2014. Route A11 was discontinued on March 29, 2015. Route A12 service was split into two separate routes on June 25, 2023. A12 service was extended to New Carrollton station from Brightseat Road while service to Capital Plaza and along Landover Road was replaced by Route L12. |
| B21, B22 | |
| B24 | B25 was replaced by the B24 on August 23, 2015. |
| B27 | |
| C2, C4 | C2 originally terminated at Montgomery Mall until January 27, 1985, when it was rerouted to terminate at Twinbrook station. The portion between Wheaton Plaza and Montgomery Mall was replaced by Ride On route 35. C2 was extended to Greenbelt Center after Greenbelt station opened in December 1993. But the route was truncated to Greenbelt station December 2010. C4 was extended to Prince George's Plaza (now Hyattsville Crossing) station from Langley Park after PG Plaza station opened in December 1993. On March 27, 2016, Sunday service was added to the C2 between Greenbelt station and Takoma Langley Crossroads Transit Center only. Late night C2 trips ending at Randolph Road & Parklawn Drive were extended to Twinbrook station on September 5, 2021. |
| C8 | Added service to the Food and Drug Administration/Federal Research Center (weekdays only) and Archives II (weekdays only) on June 17, 2012. |
| C11, C13 | |
| C12, C14 | C12: AM trips skip the Marlow Heights Shopping Center Roadway. C12 & C14 originally operated between Potomac Avenue station & intersection of Auth Road up until Naylor Road & Branch Avenue stations opened on January 13, 2001. |
| C21, C22, C26, C29 | C26 served Addison Road station until Largo Town Center station opened in 2004. The C26 was originally part of the "Kingsford-Addison Road Line" along with the old C23, C24, & C25 around the late 1990s to early 2000s. Sunday C29 service was added on December 18, 2004. C22 and C29 was rerouted to no longer serve Harry S Truman Drive south of Mount Lubentia Way as of 2/23/2018 due to a deficient bridge. C29 was rerouted to Bowie State University in March 2006 on Saturdays only. Route C26 was extended from Kettering to Bowie Park & Ride on Weekdays to replace Route B29 and C28 service. |
| C27 | Introduced on May 28, 2005, to provide additional service for the C21/C22/C26/C29 during the summer seasons. |
| D12 | D12 originally operated alongside the former S12 routing between the Eastover Shopping Center & Federal Center station, via the Marlow Heights Shopping Center until the Southern Avenue & Suitland stations opened on January 13, 2001. Route S12 was discontinued on January 13, 2001, and the D12 was truncated to only operate between the Southern Avenue & Suitland stations. Routes D13 and D14 were created on January 13, 2001, which were a rename route W11 and W12, to operate between the newly opened Southern Avenue and Suitland stations, via Andrews Air Force Base, as well as Camp Springs and Temple Hills neighborhoods, and a small portion of Indian Head Highway, Forest Heights, and Glassmanor neighborhoods, which former Routes W11, W12, and W17 originally operated on between the Federal Center SW station & Acokeek up until the Southern Avenue station opened on January 13, 2001. D14 does not serve the Marlow Heights Shopping Center. Route D13 was renamed into Route D14 which in turn, discontinued service in Glassmanor. D12 was changed to operate along Deal Drive and Audrey Lane and no longer operate along Glassmanor Drive and Irvington Street on December 17, 2023. |
| D14 | D12 originally operated alongside the former S12 routing between the Eastover Shopping Center & Federal Center station, via the Marlow Heights Shopping Center until the Southern Avenue & Suitland stations opened on January 13, 2001. Route S12 was discontinued on January 13, 2001, and the D12 was truncated to only operate between the Southern Avenue & Suitland stations. Routes D13 and D14 were created on January 13, 2001, which were a rename route W11 and W12, to operate between the newly opened Southern Avenue and Suitland stations, via Andrews Air Force Base, as well as Camp Springs and Temple Hills neighborhoods, and a small portion of Indian Head Highway, Forest Heights, and Glassmanor neighborhoods, which former Routes W11, W12, and W17 originally operated on between the Federal Center SW station & Acokeek up until the Southern Avenue station opened on January 13, 2001. D14 does not serve the Marlow Heights Shopping Center. Route D13 was renamed into Route D14 which in turn, discontinued service in Glassmanor. D12 was changed to operate along Deal Drive and Audrey Lane and no longer operate along Glassmanor Drive and Irvington Street on December 17, 2023. |
| F1 | F1 replaced the old F3 on December 11, 1993. F2 was discontinued on December 17, 2023. |
| F4 | The New Carrollton-Silver Spring Line was originally operated by route F4 and F6. Route F6 was split from the line and rerouted from Silver Spring to Fort Totten station on June 17, 2012. Service was rerouted inside Riverdale Park to its pre-March 2009 routing on September 5, 2021. |
| F6 | Originally a part of the New Carrollton-Silver Spring Line alongside route F4. Rerouted to Fort Totten station on June 17, 2012, replacing route R3. |
| F8 | F8 operates on portions of the old B6, G4, G8, and 88 streetcar lines. |
| F12 | |
| F13 | |
| F14 | Formerly known as the Sheriff Road Line. F14 used to terminate at Bradbury Heights (Southern Avenue & Pear Street) until Naylor Road opened in 2001. Service between Capitol Heights and Addison Road stations on Sundays is provided by route A12. Detours on Sheriff Road at Redskins Road During Events at FedExField. |
| G12 | Formerly known as routes T16 & T17 G12 replaces the portions of the C2 & R12 east of Greenbelt to/from Greenbelt Center/New Carrollton. G13, G14 & G16 replaces parts of routes C2 and T16 & T17 in its entirety. Routes G13 and G16 was discontinued on March 27, 2016, and replaced with the G12 & G14 routes. Routes G12 and G14 added Sunday service on March 27, 2016. Both lines were split into their own separate routes on June 6, 2021. |
| G14 | Formerly known as routes T16 & T17 G12 replaces the portions of the C2 & R12 east of Greenbelt to/from Greenbelt Center/New Carrollton. G13, G14 & G16 replaces parts of routes C2 and T16 & T17 in its entirety. Routes G13 and G16 was discontinued on March 27, 2016, and replaced with the G12 & G14 routes. Routes G12 and G14 added Sunday service on March 27, 2016. Both lines were split into their own separate routes on June 6, 2021. |
| H12 | H11 via the Princeton Estates Apartments H13 bypasses Hillcrest Heights and Marlow Heights H11, H13: skips Marlow Heights Shopping Center Roadway H11, H12 and the former H14 used to operate all the way between the Potomac Avenue station and Temple Hills until Naylor Road station opened on January 13, 2001. Once Naylor Road station opened on January 13, 2001, H14 was replaced by H13 and H11 and H12, as well as the new H13 Metrobus Route, were truncated to only operate between the Naylor Road Metro Station & Temple Hills. Route H11 and H13 were suspended on March 16, 2020; later discontinued by September 5, 2021. |
| J1, J2 | J2 originally operated between Montgomery Mall to Beltway Plaza before being replaced by route F6. J1 used to go all the way to Montgomery Mall until it was truncated to Medical Center station on December 19, 2010. Eastbound J2 buses serve the bus stop on Rockville Pike & South Drive at Medical Center station and no longer enter the bus loop as of June 24, 2018. J1 was extended back to Montgomery Mall on June 24, 2018, which replaced route J3. |
| J12 | Routes J11 and J13 were replaced by route J12 on June 26, 2016. |
| K6 | K6 operated south of Fort Totten to Metro Center and Federal Triangle when Metrorail was not open until Metro started operating earlier in the early 1990s. K6 discontinued service to the FDA campus on December 29, 2013. |
| K12 | Route K11 was replaced by K12 on June 26, 2016. K12 was rerouted to serve Donnell Drive and Marlboro Pike as of June 24, 2018. K13 was replaced by K12 on June 24, 2018. |
| K9 | Begin service on December 30, 2012 K9 no longer serves Northwest Park Apartments and was extended to Food & Drug Administration/Federal Research Center on December 29, 2013. |
| L8 | Originally operated to Silver Spring station before Friendship Heights station opened. |
| L12 | Introduced on June 25, 2023 as a portion of the A12 which was split into two routes. |
| NH1 | NH1 service was implemented in March 2008 between National Harbor and Southern Avenue station via Indian Head Highway and Southern Avenue. It was rerouted to Branch Avenue station in August 2009. NH3 was introduced December 29, 2013 but was eliminated June 21, 2015. NH1 was then rerouted back to its original Southern Avenue station terminus and now operates via Southview Apartments. |
| NH2 | NH2 is the only transit service connecting Maryland and Virginia via the Woodrow Wilson Bridge. NH2 was introduced October 23, 2016, as a pilot and was made a permanent route in 2017. Service to Huntington station was eliminated on August 23, 2020. |
| P12 | Route no longer enters United Medical Center parking lot. Passengers wishing to visit hospital must alight/board at Forest Hills Apartments. Route no longer operates on Walker Mill Road, Shady Glen Drive or Central Avenue, service on these streets is now provided by Route V12. Route now operates on South Addison Road, replacing the former V12 routing. Route no longer enters the Forest Hills Apartment Complex as of January 12, 2025. Buses remain on Southern Avenue and Wheeler Road. |
| P18 | P18 was rerouted to Southern Avenue station via Southern Avenue on June 21, 2015. Service to South Capitol Street, Firth Sterling Avenue and Anacostia station was discontinued on June 21, 2015. Route P17 and P19 service to downtown DC was discontinued on June 25, 2017. Route P17 was replaced by P18 on June 25, 2017. Route P19 was suspended on March 23, 2020; later discontinued by September 5, 2021. |
| Q2, Q4, Q6 | Q2 originally operated between Wheaton Plaza to Montgomery Village before being rerouted between Silver Spring and Shady Grove. Q1, Q4, Q5 and Q6 were introduced on December 27, 2009, to restructure the Q2. Q1 had a prior "incarnation" as a Veirs Mill Road Line until 2001. Q4 had a prior "incarnation" as the Parkland Drive Line until September 1994. Q1 & Q5 skips Montgomery College-Rockville while the Q2 & Q6 serve Montgomery College-Rockville All Route Q1 and Q5 service were renamed into the Q2 and Q6 on June 25, 2023. |
| R1, R2 | R2 and R8 originally served Crystal City and then Kennedy Center prior to the 1980s. R2 originally under the Queens Chapel Road Line until the Green Line extension to Greenbelt opened in 1993, having the R2 (alongside the R1) replace the R8 & R9. |
| R4 | R4 is a combination of the former R2, R4, R6 & R7 routes between Brookland station & West Hyattsville, replacing routes R6 and R7 in its entirety between West Hyattsville & Highview while route R2 was rerouted to Fort Totten station to become a part of the Riggs Road Line after the Greenbelt extension opened in 1993. |
| R12 | Formerly the Kenilworth Avenue-New Carrollton Line until December 2010 when the route east of Greenbelt station was replaced by G12. R11 was replaced by route R12 on August 23, 2015. |
| T2 | Operated between Dupont Circle station and Montgomery College until January 27, 1985. |
| T14 | 84 was renamed T14 on December 14, 2014. T14 had a prior "incarnation" as part of the Bowie-Belair Line until the mid-1990s when the route was discontinued. |
| T18 | |
| V12 | Route no longer operates on South Addison Road, service on this street is now provided by Route P12. Route now operates on Central Avenue, Shady Glen Drive and Walker Mill Road, replacing the former P12 routing. |
| V14 | V15 was replaced by V14 on March 27, 2016. Sunday service now runs the full route between Penn Mar Shopping Center & Deanwood station as of March 27, 2016. Select trips end at Addison Road station. |
| W14 | W14 was rerouted to Southern Avenue Metrorail station via Southern Avenue on June 21, 2015, with service to South Capitol Street, Firth Sterling Avenue and Anacostia Metrorail station was discontinued. Route W13 was replaced by W14 on June 25, 2017. |
| Y2, Y7, Y8 | Route Y7 service to Rockville station was eliminated on June 29, 2003. Routes Y5 & Y9 were eliminated August 24, 2014, and replaced by Y7 and Y8. Route Y2 is a "reincarnated" route Y9 that was introduced on December 14, 2014. Route Y8 discontinued all weekend service on December 14, 2014, but resumed weekend service on June 25, 2017. Route Y7 discontinued all weekend service on June 25, 2017. |
| Z2 | Z2 was named the Colesville Road Line until 2004. Midday service was discontinued on June 28, 2009. The Saturday Z2 service, which operated as a Ride On route since September 1993, was eliminated January 12, 2013, due to very low ridership. |
| Z6, Z8 | Z6 had a prior incarnation operating between Four Corners (Marked Franklin via Dale) and Silver Spring. Saturday service began on March 27, 2016, and operates between Silver Spring station & Castle Blvd only. Z8 originally operated between the Silver Spring station and Burtonsville Park & Ride until September 26, 2004, when it was replaced by the Z6. All route Z6 and Z8 service was merged into the Silver Spring-Fairland Line on September 5, 2021. Service to Verizon-Chesapeake Complex was eliminated as well. |
| Z7 | Route Z7 replaced the Z9 & Z29 on March 27, 2016. Z7 had a prior "incarnation" as the Calverton Express Line along with the former Z17 until it was discontinued on September 26, 2004. |

## Upcoming MD Better Bus Routes

These bus routes will begin on June 29, 2025 when WMATA Better Bus Redesign is released.

### Montgomery County Routes

| Route | Terminals | Terminals | Terminals | Streets traveled | Service notes |
| M12 | Twinbrook station (East side) | ↔ | Hyattsville Crossing station | University Boulevard Riggs Road East-West Highway | Part of 12-minute frequent service network |
| M20 | Georgia Ave – ICC Park & Ride Lot | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Georgia Avenue | Part of 12-minute frequent service network |
| M22 | MedStar Montgomery Medical Center | ↔ | Bethesda station | Connecticut Avenue Georgia Avenue | |
| M42 | North Bethesda station | ↔ | College Park–University of Maryland station | Randolph Road New Hampshire Avenue U.S. Route 1 Baltimore Avenue | |
| M44 | North Bethesda station | ↔ | Hyattsville Crossing station | Randolph Road U.S. Route 1 Baltimore Avenue | Sunday service only operates between Hyattsville Crossing and White Oak. |
| M52 | South Laurel Park & Ride Lot Burtonsville Shopping Center | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Cherry Lane Sandy Spring Road Old Columbia Pike Columbia Pike Lockwood Drive Colesville Road | Part of 20-minute frequent service network Weekday peak-hour service is extended to Laurel |
| M54 | Greencastle Park & Ride Lot | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Briggs Chaney Road Old Columbia Pike Lockwood Drive Colesville Road | Part of 20-minute frequent service network |
| M60 | Calverton (Plum Orchard Drive & Healing Way) | ↔ | Fort Totten station | New Hampshire Avenue | Part of 12-minute frequent service network |
| M6X | Food & Drug Administration/Federal Research Center | ↔ | Fort Totten station | New Hampshire Avenue | Weekday peak-hour service only. |
| M70 | Montgomery Mall | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Old Georgetown Road East-West Highway | Part of 12-minute frequent service network |
| M82 | Rockville station (east side) | ↔ | Friendship Heights station | Falls Road River Road | |

#### Route History

| Route | History |
| M12 | Existing routing of the former Route C4. |
| M20 | Existing routing of the former Routes Q2, and Q6 and Y2, Y7, and Y8. |
| M22 | Combination of the former Routes Y2, Y7, and Y8 between Olney and Wheaton and the former Route L8 between Kensington and Chevy Chase. |
| M42 | Combination of the former Route 83 between College Park and Cherry Hill, and Route C8 between North Bethesda and White Oak. |
| M44 | Combination of the former Route 86 between Hyattsville Crossing and Calverton, and Route C8 between North Bethesda and White Oak. |
| M52 | Combination of the former Z6, Z8, and Z7. |
| M54 | Existing routing of the former Route Z8 with service to Briggs Chaney Park & Ride and Castle Boulevard being eliminated. |
| M60 | Existing routing of the former Route K6 with an extension to Calverton via Columbia Pike. |
| M6X | Existing routing of the former Route K9. |
| M70 | Existing routing of the former Route J2. |
| M82 | Existing routing of the former Route T2. |

### Prince George's County Routes

| Route | Terminals | Terminals | Terminals | Streets traveled | Service notes |
| P10 | Rhode Island Avenue–Brentwood station | ↔ | College Park–University of Maryland station | U.S. Route 1 Baltimore Avenue Rhode Island Ave | |
| P12 | South Laurel Park & Ride Lot | ↔ | Greenbelt station | Cherrywood Lane Kenilworth Avenue Edmonston Road U.S. Route 1 Baltimore Avenue | |
| P14 | Deanwood station | ↔ | Greenbelt station | Kenilworth Avenue Edmonston Road | |
| P15, P16 | P15 Adelphi (Riggs Rd & Edwards Way) P16 Calverton (Plum Orchard Drive & Healing Way) | ↔ | Fort Totten station | Riggs Road | P15: Weekday peak hour service only |
| P1X | Rhode Island Avenue–Brentwood station | ↔ | IKEA Way (College Park, MD) | U.S. Route 1 Baltimore Avenue Rhode Island Avenue | Part of 20-minute frequent service network |
| P20 | Greenbelt station | ↔ | New Carrollton station (West Side) | Greenbelt Road Cipriano Road Annapolis Road Lanham-Severn Road | |
| P21 | Greenbelt station | ↔ | New Carrollton station (West Side) | Greenbelt Road Hanover Parkway Princess Garden Parkway Annapolis Road | |
| P24 | Bowie State University | ↔ | New Carrollton station (West Side) | Good Luck Road Lanham-Severn Road | Sunday service only operates between New Carrollton and Goddard Corporate Park. |
| P30 | Silver Spring station (Paul S. Sarbanes Transit Center) | ↔ | New Carrollton station (West Side) | East-West Highway Philadelphia Avenue Riverdale Road Queensbury Road | Part of 12-minute frequent service network |
| P31 | Takoma Langley Crossroads Transit Center | ↔ | New Carrollton station (West Side) | University Boulevard Finns Lane Riverdale Road | |
| P32 | Greenbelt station | ↔ | Fort Totten station | Adelphi Road Ager Road Chillum Road Greenbelt Road Sargent Road | |
| P33 | Hyattsville Crossing station | ↔ | Brookland-CUA station | Queens Chapel Road Michigan Avenue NE | |
| P35 | New Carrollton station (West side) | ↔ | Fort Totten station | Good Luck Road Finns Lane Riverdale Road East-West Highway Sargent Road | Weekday service only |
| P40 | New Carrollton station (West side) | ↔ | Rhode Island Avenue-Brentwood station | Annapolis Road Rhode Island Avenue NE | Part of 12-minute frequent service network |
| P41 | Capital Plaza Mall | ↔ | Downtown Largo station | Landover Road | Part of 20-minute frequent service network |
| P42 | New Carrollton station (West side) | ↔ | Takoma station | Chillum Road Riverdale Road Edmonston Road | |
| P60 | New Carrollton station (East side) | ↔ | Suitland station | Martin Luther King Jr Highway Addison Road Silver Hill Road | Part of 12-minute frequent service network |
| P61 | New Carrollton station (East side) | ↔ | Suitland station | Brightseat Road Walker Mill Road Marlboro Pike | |
| P62 | Deanwood station | ↔ | Branch Avenue station | Addison Road Walker Mill Road Central Avenue Allentown Road Forestville Road | |
| P63 | Downtown Largo station | ↔ | Naylor Road station | Central Avenue Larchmont Avenue Southern Avenue | |
| P66 | Forestville (8431 Old Marlboro Pike) | ↔ | Suitland station | Silver Hill Road Pennsylvania Avenue | |
| P72 | Downtown Largo station | ↔ | Bowie Park & Ride Lot | Central Avenue Mitchellville Road | |
| P73 | Downtown Largo station | ↔ | Collington Center | Central Avenue | Weekday service only |
| P87 | Suitland station | ↔ | Oxon Hill Park & Ride | Allentown Road Brinkley Road Suitland Road Oxon Hill Road | |
| P90 | Suitland station | ↔ | King Street–Old Town station | St. Barnabas Road Oxon Hill Road I-495 Monument Avenue / MGM National Avenue | Part of 20-minute frequent service network |
| P93, P94 | Suitland station | ↔ | P93 Birchwood City P94 National Harbor (St. George Boulevard & Waterfront Street) | Iverson Street Southern Avenue Livingston Road Monument Avenue / MGM National Avenue (P94) | Part of 12-minute frequent service network |
| P96 | Suitland station | ↔ | Oxon Hill Park & Ride | Oxon Hill Road | |
| P97 | Fort Washington Park & Ride Lot | ↔ | Southern Avenue station | Oxon Hill Road Southern Avenue | Weekday service only. |

#### Route History

| Route | History |
| P10 | Modified routing of the former Route 86 with service to Calverton being replaced by Route M44. |
| P12 | Existing routing of the former Route 89M. |
| P14 | Modified routing of the former Route R12 with service serving the Berwyn Heights neighborhood instead of Beltway Plaza. |
| P15, P16 | Modified routing of the former Routes R1 and R2. P15 serves the Lewisdale neighborhood compared to Route R1 which bypasses it. Former R2 service along Cherry Hill Road is replaced by Route M44. |
| P1X | Modified routing of the former Route 83 and 86 with service to College Park station replaced by Route P10, and to Calverton/Cherry Hill replaced by Routes M42 and M44. |
| P20 | Modified routing of the former Route G14 with service running along Lanham-Severn Road instead of Good Luck Road. Service on Good Luck Road is provided by Route P24. |
| P21 | Existing routing of the former Route G12. |
| P24 | Modified routing of the former Route B27 with service running along Good Luck Road and serving Goddard Corporate Park instead of continuing on Lanham-Severn Road. |
| P30 | Existing routing of the former Route F4. |
| P31 | Combination of the former Route C2 between Takoma Langley Crossroads and University of Maryland, and a modified routing of Route F6 between College Park and New Carrollton. |
| P32 | Combination of the former Route C2 between Greenbelt and University of Maryland, route F6 between University of Maryland and Hyattsville Crossing, and TheBus Routes 13 and 19 between Hyattsville Crossing and West Hyattsville. |
| P33 | Modified routing of the former Route R4 with service to Highview being eliminated. |
| P35 | Combination of the former Route F6 between New Carrollton and Riverdale and Fort Totten to East-West Highway, and a modified routing of the former Route F4 between East-West Highway and Riverdale, then a routing along Kenilworth Avenue. |
| P40 | Existing routing of the former Route T18. |
| P41 | Existing routing of the former Route L12 with service to the former Prince George's Hospital being eliminated. |
| P42 | Combination of a modified Route F1 between Takoma and Mount Rainier, and the former Route T14 routing between Mount Rainier and New Carrollton with new service through Fort Lincoln. |
| P60 | Combination of a modified Route A12 with service through Palmer Park and Glenarden being replaced by Routes P41 and P61, and the former Route P12 between Addison Road and Suitland. |
| P61 | Combination of Routes F14 between New Carrollton and Northwest stadium, and V12 between Central Avenue and Suitland with new service along Morgan Boulevard and via Morgan Boulevard station. |
| P62 | Combination of Routes K12 between Branch Avenue and Penn Mar Shopping Center, and the full former Route V14 routing. |
| P63 | Combination of Routes C21, C22, C29 between Largo and Addison Road via Morgan Boulevard station, and Route F14 between Addison Road and Naylor Road stations. |
| P66 | Combination of former Routes J12 between Forrestville and Penn Mar, and Route K12 between Penn Mar and Suitland. |
| P72 | Existing routing of the former Routes C26 and C29 with service to Addison Road being replaced by Route P63, and Saturday service to Bowie State University being eliminated. |
| P73 | Combination routing of the former Routes C21 and C22 with service to Addison Road being replaced by Route P63. |
| P87 | Modified routing of the former Route D14. |
| P90 | Combination routing of the former Route D12 between Suitland and Oxon Hill Road, Route NH1 between Oxon Hill Road and National Harbor, and the full Route NH2. |
| P93, P94 | Combination routing of the former Route P12 between Suitland and Eastover Shopping Center, and Route Route D12 to Glassmanor, and Route NH1 to National Harbor. |
| P96 | Combination routing of the former Route D12, D14, and H12. |
| P97 | Existing routing of the former Route P18. |

## Former Routes
### Routes eliminated prior to 2025 Bus Redesign

These routes have been served by Metrobus at one point but have since been discontinued due to either low ridership, duplication of another route, simplification to other routes, combined into another route, low funding, or transferred to another bus company as it would be cheaper to maintain cost and for another carrier to operate the line. However some routes would be reincarnated into new routes for Metrobus. Examples of reincarnations were the C8, and Z6.
| Route | Terminals | Terminals | Terminals | Streets traveled | History |
| 66 Shady Grove Shuttle Line | Shady Grove station | ↔ | I-370 Satellite Parking Lot | I-370 | |
| 81 College Park Line | Rhode Island Avenue–Brentwood station | ↔ | Cherry Hill Campground (Jayrose Boulevard & Cherry Hill Road) | U.S. Route 1 Baltimore Avenue Rhode Island Avenue | Discontinued on March 27, 2016, replaced by 83. |
| 82 College Park Line | Rhode Island Avenue–Brentwood station | ↔ | Mount Rainier Terminal | Rhode Island Avenue | A prior incarnation of route 82 would operate to Hollywood, Maryland. Discontinued on December 18, 2016, replaced by 83. |
| 83X College Park Line | College Park–University of Maryland station | ↔ | Cherry Hill Park Campground | Baltimore Avenue | Operated from the third Monday in June through the second Friday of August each year. Route was suspended, and later discontinued in 2021. |
| 84 Rhode Island Avenue-New Carrollton Line | Rhode Island Avenue–Brentwood station | ↔ | New Carrollton station | Kenilworth Avenue Riverdale Road Rhode Island Avenue | Renamed T14 on December 14, 2014. |
| 85 Rhode Island Avenue-New Carrollton Line | Rhode Island Avenue–Brentwood station | ↔ | New Carrollton station | Kenilworth Avenue Riverdale Road Rhode Island Avenue | Discontinued on December 30, 2007, and replaced by route 84. |
| 87 Laurel Express Line | Laurel (Baltimore Ave & Main St, AM Start; Cypress St & Laurel Lakes Ave, PM End) | ↔ | Greenbelt station New Carrollton station (East Side entrance) (select trips) | Baltimore-Washington Parkway Baltimore Avenue | 87 originally operated between College Park, Maryland and West Potomac Park under the old 87 streetcar station. 87 operated to K St. & 11th St. NW via the Government Printing Office, SW Mall (L'Enfant Plaza station), West Potomac Park (State Department) until Greenbelt Station opened in 1993. All Route 88 service was eliminated March 30, 2014. Suspended as of March 18, 2020; later discontinued by September 5, 2021. |
| 88 Laurel Express Line | Laurel (Baltimore Ave & Main St, AM Start; Cypress St & Laurel Lakes Av, PM End) | ↔ | New Carrollton station | Baltimore-Washington Parkway | Originally operated between Chevery to Rhode Island Ave Discontinued on March 30, 2014. Replaced by route 87. |
| 89 Laurel Line | Laurel (Cherry Lane & 4th Street (AM); Middletown Apts (PM) | ↔ | Greenbelt station | Cherrywood Lane Kenilworth Avenue Edmonston Road Baltimore Avenue | 89 originally operated between Mount Rainier terminal and West Potomac Park around the 1950s to 1960s. 89 used to operate between Rhode Island Avenue station until the Greenbelt station opened on December 11, 1993. Suspended as of March 23, 2020; later discontinued by September 5, 2021 being replaced by the 89M. |
| A11 Martin Luther King Jr. Highway Line | Capital Plaza | ↔ | Federal Triangle station (11th & E Sts., N.W.) | Martin Luther King Jr Ave Pennsylvania Avenue (NW, NE, SE) | Discontinued on March 29, 2015, replaced by A12. |
| A13, A17 Martin Luther King Jr. Highway Line | | ↔ | | Martin Luther King Jr Ave | Discontinued on November 21, 1978, replaced by A12. |
| A15 Martin Luther King Jr. Highway Line | Capital Plaza Mall | ↔ | Addison Road station | Landover Road | Discontinued on December 18, 2004, and replaced by a combination of A12 and Prince George's County The Bus Route 22. |
| B11 Bethesda Reverse Commute Line | Rosslyn station | ↔ | Medical Center | Wisconsin Avenue | Discontinued on December 27, 2003. |
| B12 | Penn Mar | ↔ | Potomac Avenue station | Pennsylvania Avenue | Discontinued November 21, 1978, replaced by V11 & V12. |
| B19 | Suitland Federal Center | ↔ | | | Discontinued November 21, 1978, replaced by H17 & K17. |
| B23 Bowie–Belair Line | Bowie Park & Ride Lot | ↔ | New Carrollton station (West Side) | Annapolis Road Fontana Drive | Discontinued on September 29, 2002, and replaced by route B24. |
| B25 Bowie-Belair Line | Bowie Park & Ride Lot | ↔ | New Carrollton station (West Side) | Annapolis Road | Discontinued on August 23, 2015, replaced by B24. |
| B29 Crofton–New Carrollton Line | Crofton Country Club Gateway Center (Mitchellville Road & Harbour Way) | ↔ | New Carrollton station (East Side) | Crain Highway John Hanson Highway | Suspended as of March 16, 2020; later discontinued by September 5, 2021 and replaced by Route C28 on June 6, 2021. |
| B30 Greenbelt–BWI Thurgood Marshall Airport Express Line | Baltimore/Washington International Thurgood Marshall Airport | ↔ | Greenbelt station | Baltimore-Washington Parkway Interstate 195 | Weekday service only. Airport Express: $7.50 fare On June 25, 2017, Saturday and Sunday service on the B30 Line was eliminated. On June 24, 2018, B30 was rerouted to serve the Arundel Mills Mall. Suspended as of March 18, 2020; later discontinued by September 5, 2021. |
| B31 Crofton-New Carrollton Line | Bowie Gateway Center | ↔ | New Carrollton station | Crain Highway John Hanson Highway | Discontinued on June 26, 2016, replaced by B29. |
| C1 Wilson Lane Line | Glen Echo | ↔ | Friendship Heights station | Wisconsin Avenue River Road Wilson Lane Old Georgetown Road Goldsboro Road | Discontinued on January 22, 1984; replaced by Ride On route 31. |
| C3, C5 | | ↔ | | | Discontinued on January 2, 1981. |
| C4 Randolph Road Line | Montgomery College | ↔ | White Oak Shopping Center | Randolph Road | Discontinued on September 6, 1981. Replaced by extended Metrobus route Z4. |
| C6 Bel Pre Road Line | Rockville station | ↔ | Glenmont | | Entered service on January 27, 1985. Discontinued on February 22, 1987. Replaced by Metrobus routes Y4 and Y7. |
| C6 Randolph Road Line | Twinbrook | ↔ | Hillandale | | Entered service on October 1, 1990. Replaced Metrobus route Z4 between Glenmont and Montgomery College. Truncated from Montgomery College to Twinbrook station on December 30, 1991. Discontinued in 1998 and replaced by Ride On 10 and Metrobus C8 |
| C7 Korvettes-Sivler Spring Line | Silver Spring station | ↔ | | Twinbrook Parkway Chapman Avenue Rockville Pike | |
| C7, C9 Greenbelt–Glenmont Line | Greenbelt Station | ↔ | Glenmont station | Randolph Road | Discontinued on June 28, 2009. |
| C8 Aspen Hill Road-Montgomery Mall Line | Montgomery Mall | ↔ | Glenmont station | Bel Pre Road Connecticut Avenue Aspen Hill Road Twinbrook Parkway Executive Boulevard Old Georgetown Road | Discontinued in 1996 and replaced by Ride On 26. C8 was reincarnated as the Glenmont–College Park Line in July, 1998 and later the College Park-White Flint Line on January 13, 2001 |
| C18 Waldorf-Branch Avenue Line | Waldorf, Maryland | ↔ | Branch Avenue station | Branch Avenue Crain Highway Smallwood Drive Saint Charles Parkway Mattawoman-Beantown Road | Introduced on December 30, 2001 Discontinued on December 27, 2003. |
| C23, C24 Kingsford-Addison Road Line | Addison Road station | ↔ | Kingsford | | C24 discontinued in December, 1998 and replaced by the C25 route C23 discontinued around 2003 |
| C25 Central Avenue Line | Addison Road station | ↔ | East Kettering | Central Avenue | Discontinued on December 18, 2004, and replaced by route C26. |
| C28 Pointer Ridge Line | Pointer Ridge (Hall Road & Pointer Ridge Dr) | ↔ | New Carrollton station (East Side) | John Hanson Highway | Suspended as of March 18, 2020; later discontinued by September 5, 2021 being replaced by Route C26 on June 6, 2021. |
| D13 Oxon Hill–Suitland Line | Suitland station | ↔ | Southern Avenue station | Brinkley Road Allentown Road Indian Head Highway | Discontinued on September 5, 2021. Replaced by Route D14. |
| F2 Chillum Road Line | Takoma station | ↔ | Cheverly station | Chillum Road Eastern Avenue 34th Street Landover Road | Operates early mornings, late nights, and weekends only. Discontinued on December 17, 2023. Replaced by Route F1. |
| F3 Chillum Road Line | Takoma station | ↔ | Columbia Park | Chillum Road | Discontinued on December 11, 1993. Replaced by F8 & F12 |
| F5 Sargent Road Line | Fort Totten station | ↔ | The Mall at Prince Georges | Sargent Road | Discontinued December 11, 1993, replaced by R3. See Greenbelt–Fort Totten Line |
| F9 | Lewisdale | ↔ | Potomac Park | | |
| G1 Greenbelt Station Parking Lot Shuttle | Greenbelt Station | ↔ | | | Discontinued on December 27, 2003. |
| G7, G9 Queens Chapel Road Line | Highview Apartment Complex | ↔ | Downtown, Washington D.C. | | Discontinued February 6, 1978, replaced by the R2, R4, R6, and R7 G9 was reincarnated as the Rhode Island Avenue Limited Line in 2017 See Queens Chapel Road Line. |
| G8 | Langley Park, Maryland | ↔ | Prince George's Hospital Center | | |
| G13, G16 Greenbelt-New Carrollton Line | Greenbelt station | ↔ | New Carrollton station | Greenbelt Road Cipriano Road Annapolis Road | Discontinued on March 27, 2016, and replaced by G12 and G14. |
| H11, H13 Temple Hills–Marlow Heights Line | Temple Hills (Heather Hills Apartments) | ↔ | Naylor Road station | St. Barnabas Road Branch Avenue | Routes were suspended on March 16, 2020; later discontinued by September 5, 2021. |
| H14 Temple Hills–Marlow Heights Line | Potomac Avenue station | ↔ | Heather Hills Apartments | | Discontinued on January 13, 2001, after Naylor Road Station opened, replaced by H11, H12, and H13. |
| H17 | Potomac Avenue station | ↔ | | | Discontinued on November 21, 1978. |
| J3 Bethesda–Silver Spring Line | Montgomery Mall | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Democracy Boulevard Old Georgetown Road Cedar Lane Rockville Pike/ Wisconsin Avenue East-West Highway | Discontinued on June 24, 2018, replaced by J1. |
| J4 Bethesda–Silver Spring Line | Friendship Heights station | ↔ | Silver Spring station | | Truncated from Beltway Plaza to Silver Spring station on February 19, 1978. Discontinued on January 27, 1985. |
| J4 College Park–Bethesda Line | Bethesda station | ↔ | College Park–University of Maryland station | East-West Highway University Boulevard East | Introduced on April 15, 2002. Since June 22, 2014, eastbound J4 buses operate on Stadium Drive during the Campus Drive construction project; westbound route remains unchanged. Suspended on March 16, 2020; later discontinued by September 5, 2021. |
| J5 Montgomery Village–Rock Spring Park Line (Village Express) | Montgomery Village | ↔ | Rock Spring Park | | |
| J5 Twinbrook–Silver Spring Line | Twinbrook station (West Side) | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Rockville Pike Capital Beltway | Discontinued on June 25, 2017. |
| J6 | Federal Triangle | ↔ | Silver Spring station | | Discontinued on February 19, 1978. Maryland portion replaced by Ride On route 12. DC portion replaced by Metrobus route P2. |
| J6 Bethesda–Silver Spring Line | Friendship Heights station | ↔ | Silver Spring station | | Discontinued on January 22, 1984. Replaced by extended Ride On route 1. |
| J7 | | ↔ | | | Discontinued September 24, 1978, replaced by C1 & T1. |
| J7 Rock Spring Park Express Line | | ↔ | | South Drive Center Drive Old Georgetown Road Democracy Boulevard Rockledge Drive. | Discontinued on December 29, 1996, and replaced by route J1. |
| J7, J9 I–270 Express Line | Lakeforest Mall | ↔ | Bethesda station | Interstate 270 | Discontinued on September 29, 2017; Replaced by Ride On 101. |
| J8 University Boulevard Line | Wheaton Plaza | ↔ | Beltway Plaza Mall | University Boulevard | Was turned into Route C2 |
| J8 I–270 Express Line | Lakeforest Mall | ↔ | Bethesda station | Interstate 270 | Renamed as J7 on September 26, 2004. |
| J11, J13 Marlboro Pike Line | J11 Addison Road station J13 Potomac Avenue station | ↔ | Forestville (8431 Old Marlboro Pike) | Marlboro Pike Larchmont Avenue | Discontinued on June 26, 2016, replaced by J12. |
| J14, J15 Marlboro Pike Line | Addison Road station | ↔ | Ritchie | Marlboro Pike Larchmont Avenue | Discontinued on December 18, 2004; replaced by TheBus #24. |
| J16 Marlboro Pike Line | Potomac Avenue station | ↔ | | Palmer Highway Addison Road Central Avenue Larchmont Avenue Marlboro Pike Bowen Road Alabama Avenue Pennsylvania Avenue | Discontinued January 1, 1981, replaced by A12, F14, J12 & J14. |
| K5, K8 New Hampshire Avenue Line | | ↔ | | | |
| K7, K9 | Tamarack | ↔ | K7 Southwest Mall K9 Federal Triangle | | |
| K11 Forestville Line | Penn Mar Shopping Center | ↔ | Potomac Avenue station | Pennsylvania Avenue | Discontinued on June 26, 2016, replaced by K12. |
| K13 Forestville Line | Penn Mar Shopping Center | ↔ | Suitland station | Pennsylvania Avenue | Introduced on January 13, 2001 Discontinued on June 24, 2018, replaced by K12. |
| K14 Forestville Line | | ↔ | | | |
| K17 | | ↔ | | | |
| K18 | Upper Marlboro, Maryland | ↔ | Fairfax Village | | |
| K19 Forestville Line | Potomac Avenue station | ↔ | Penn Mar | Pennsylvania Avenue | Discontinued on January 13, 2001, replaced by K13. |
| L3 Connecticut Avenue-Maryland Line | Wheaton station | ↔ | Federal Triangle | Connecticut Avenue | |
| L6 | Garrett Park | ↔ | Federal Triangle | Connecticut Avenue Strathmore Avenue Knowles Avenue | Discontinued on February 19, 1978. Portion along Strathmore/Knowles Avenues replaced by Ride On route 5. |
| L6 Connecticut Avenue-Wheaton Line | Wheaton station | ↔ | Van Ness–UDC station | Connecticut Avenue | Discontinued on September 28, 1990. |
| L7 Connecticut Avenue-Maryland Line | Wheaton station | ↔ | Friendship Heights station | Connecticut Avenue | Truncated from Van Ness–UDC station to Friendship Heights station on October 1, 1990. Discontinued June 28, 2009. |
| M11 Suitland Line | Potomac Avenue station | ↔ | Auth Place & Auth Way | Pennsylvania Avenue | Discontinued on January 13, 2001, and replaced by routes D13, D14, and K12. |
| M12 | | ↔ | | | |
| N8 Massachusetts Avenue-Maryland Line | Friendship Heights station | ↔ | Glen Echo | Western Avenue Massachusetts Avenue Goldsboro Road | Replaced route N4 between Westmoreland Circle and Glen Echo on January 27, 1985. Discontinued on June 28, 1992; replaced by Ride On route 29. |
| N11, N13 Branch Avenue-King Street Express Line | N11 Branch Avenue station N13 Suitland station | ↔ | King Street–Old Town station | Saint Barnabas Road (N13) Oxon Hill Road (N11) Woodrow Wilson Bridge | Introduced on January 13, 2001. Discontinued on June 26, 2004. |
| NH3 National Harbor–Southern Avenue Line | Southern Avenue station | ↔ | National Harbor (St. George Boulevard & Waterfront Street) | Capital Beltway Indian Head Highway | Discontinued on June 21, 2015, and replaced by route NH1. |
| P13 Oxon Hill-Pentagon Line | Pentagon station | ↔ | Eastover Shopping Center | Woodrow Wilson Bridge Indian Head Highway Washington Street George Washington Memorial Parkway Eads Street | Discontinued on January 13, 2001, when Southern Avenue Metro Station opened. Replaced by the N11 and N13. |
| P17 Oxon Hill–Fort Washington Line | Farragut Square | ↔ | Fort Washington Park & Ride Lot | Oxon Hill Road South Capitol Street | Discontinued on June 25, 2017, replaced by Route P18. |
| P19 Oxon Hill–Fort Washington Line | Fort Washington Park & Ride Lot | ↔ | Southern Avenue station | Oxon Hill Road Southern Avenue | Suspended as of March 23, 2020; later discontinued by September 5, 2021. |
| Q1 Veirs Mill Road Line | Rockville station | ↔ | Wheaton station | Veirs Mill Road | Entered service on October 1, 1990. Discontinued on January 13, 2001, and replaced by route Q2. Q1 was eventually "reincarnated" and extended to Shady Grove and Silver Spring stations on December 27, 2009. |
| Q1, Q5 Veirs Mill Road Line | Shady Grove station | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) (Q1) Wheaton station (Q5) | Veirs Mill Road | Renamed into the Q2 and Q6 on June 25, 2023. |
| Q3 Aspen Hill-Wheaton Line | Glenmont | ↔ | Aspen Hill | Connecticut Avenue | Entered service on October 1, 1990. Discontinued in 1994 & replaced by Ride On route 41. |
| Q4 Parkland Drive Lane | Wheaton station | ↔ | Rockville | | Replaced by Ride On 48 in 1994. Q4 was brought back to service in December, 2009. |
| Q5, Q9 | Glenmont station | ↔ | Federal Triangle | | |
| Q7 | Montgomery Village | ↔ | Federal Triangle | | |
| Q8 Veirs Mill Road Line | Silver Spring station | ↔ | Montgomery Mall | Randolph Road Dewey Road Garrett Park Road Schuylkill Road Parklawn Drive Montrose Road Seven Locks Road | Discontinued on January 27, 1985. Replaced by Ride On route 38 and Ride On route 47. |
| R3 Greenbelt-Prince George's Plaza Line | Greenbelt Station | ↔ | Hyattsville Crossing station | Greenbelt Road Metzerott Road | Service discontinued March 27, 2016. Service between Prince George's Plaza (now Hyattsville Crossing) station to Fort Totten station ended June 17, 2012, and was replaced by the F6, and R2. See Greenbelt–Fort Totten Line. |
| R5 | Fort McNair | ↔ | Kennedy Center | | |
| R5 Riggs Road Line | Fort Totten station | ↔ | Calverton | Riggs Road Beltsville Drive Calverton Boulevard | Discontinued June 17, 2012, replaced by R2. See Riggs Road Line |
| R6, R7 Queens Chapel Road Line | Brookland–CUA station | ↔ | R6 Lewisdale (Lewisdale Drive & 23rd Avenue) R7 Highview Apartments | Queens Chapel Road | Discontinued on December 11, 1993, and replaced by the R3 and R4. See Queens Chapel Road Line and Riggs Road Line |
| R7 Riggs Road Line | Fort Totten station | ↔ | Calverton | Riggs Road Beltsville Drive Calverton Boulevard | Discontinued in 1998 due to safety concerns at the US Army Research Laboratory. Replaced by the R2. See Queens Chapel Road Line and Riggs Road Line |
| R8, R9 Riggs Road Line | Fort Totten station | ↔ | Calverton | Riggs Road/ Powder Mill Road Beltsville Drive | R8 originally served Crystal City and then Kennedy Center prior to the 1980s. Discontinued on December 11, 1993, replaced by R1, R2, and R5. See Riggs Road Line |
| R11 Kenilworth Avenue Line | Deanwood station | ↔ | Greenbelt station | Kenilworth Avenue River Road Paint Branch Parkway Edmonston Road Greenbelt Road Cherrywood Lane | Discontinued August 23, 2015, and replaced by R12. |
| R11, R15 Greenbelt–New Carrollton Express Line | New Carrollton station | ↔ | Beltway Plaza Mall | Capital Beltway (R11) Princess Garden Parkway (R15) | Discontinued December 11, 1993, when Greenbelt station opened. Replaced by routes R12, T15, T16, and T17. |
| R13, R14 Kenilworth Avenue Line | Macke Industrial Park Complex | ↔ | Southwest Washington DC | Kenilworth Avenue | Discontinued on July 18, 1977 |
| S12 Eastover-Marlow Heights Line | Federal Center station | ↔ | Southview (Southview Drive & Southview Court) | Capitol Street | Discontinued on January 13, 2001, and replaced by routes D12, and P12. |
| S95 | Mid-Pike Plaza | ↔ | North Bethesda station | | Discontinued on April 1, 2004. |
| T1 Bradley Boulevard Line | Friendship Heights station | ↔ | Congressional Country Club | | Rerouted from Friendship Heights station to Bethesda station on January 27, 1985. Discontinued in 1989 and replaced by Ride On 36 |
| T3 River Road Line | Montgomery College | ↔ | Federal Triangle | River Road Wisconsin Avenue | |
| T4 Old Georgetown Road Line | Bethesda station | ↔ | Twinbrook station | Old Georgetown Road | Discontinued on December 29, 1991, replaced by Ride On 42 & 46. |
| T6 Bethesda-Rockville Line | Friendship Heights station | ↔ | Montgomery College | | Discontinued on December 29, 1991, replaced by Ride On 42 & 46. |
| T5 | Riggs Rd | ↔ | Alta Vista, Maryland | | |
| T7 | | ↔ | | | Discontinued in 1984. |
| T8 Gaithersburg Line | Montgomery Village | ↔ | Montgomery College | | |
| T9 Westboard Shuttle | Friendship Heights station | ↔ | NIH (Bethesda | Western Avenue Wisconsin Avenue | Discontinued on January 31, 1982. |
| T10, T11 Central Ave-Belair Line | Capitol Heights station | ↔ | Kettering, Maryland (T10) Belair Center (T11) | Central Ave | Discontinued around the 1990s & replaced by C21, C22, C26, C27, C29. |
| T12, T14 Bowie-Belair Line | New Carrollton station | ↔ | Bowie State University | Central Ave | Discontinued around 1995 & replaced by B24, B25 & B27 Route T14 was reincarnated into the Rhode Island Avenue–New Carrollton Line on December 14, 2014. |
| T15 Greenbelt Line | Greenbelt station | ↔ | New Carrollton station | Greenbelt Road Cipriano Road Annapolis Road | Discontinued on September 29, 2002, and replaced with a combination of the R12, T16, and T17. |
| T16, T17 Greenbelt Line | Greenbelt station | ↔ | New Carrollton station | Greenbelt Road Cipriano Road Annapolis Road | Discontinued on December 19, 2010; replaced by G12, G13, G14 & G16. See Greenbelt-New Carrollton Line. |
| T19 | Crofton | ↔ | New Carrollton station | | |
| V11 District Heights Line | Penn Mar Shopping Center | ↔ | Potomac Avenue station | | Discontinued on November 22, 1980, and replaced by the V12, & V14 |
| V11 District Heights–Suitland Line | Addison Road station | ↔ | Potomac Avenue station | Central Avenue Walker Mill Road | Introduced on December 30, 2001 Discontinued on June 24, 2007, and replaced by the V12 |
| V15 District Heights–Seat Pleasant Line | Penn Mar Shopping Center | ↔ | Deanwood station | Walker Mill Road Central Avenue Addison Road | Introduced in December, 1998 to replace V14's diversion off of Hill Road onto the intersections of Hastings Drive & Pepper Mill Drive to join Central Avenue when V14 was rerouted to operate straight on Hill Road to join Central Avenue Discontinued on March 27, 2016 & replaced by the V14. |
| W11, W12 Eastover–Indian Head Highway Line | Federal Center SW station | ↔ | Camp Springs (Allentown Way & Old Branch Avenue) | Indian Head Highway | Renamed routes D13 and D14 on January 13, 2001. |
| W13 Bock Road Line | Farragut Square | ↔ | Fort Washington Forest (Old Fort Road & Indian Head Highway) | Bock Road South Capitol Street | Discontinued on June 25, 2017, replaced by the W14. |
| W15 Camp Springs-Indian Head Hwy. Line | Southern Avenue station | ↔ | Camp Springs (Old Branch Ave & Allentown Way) | Indian Head | Transferred and renamed TheBus 37 on June 21, 2015. |
| W17 Indian Head Highway Line | Southern Avenue station | ↔ | Accokeek, Maryland (Livingston Rand & Indian Head Highway) | Livingston Rand Indian Head Highway | Originally a part of the Eastover–Indian Head Highway Line alongside the W11, W12, and W15 until January 13, 2001. Discontinued on December 26, 2004; replaced by Route W13 and W15. |
| W19 Indian Head Express Line | Indian Head (Pye Street & Greenhow Circle) | ↔ | Southern Avenue station | Indian Head Highway | Introduced on January 13, 2001. Discontinued on June 25, 2017. |
| Y1 | Montgomery Village | ↔ | West Potomac Park | | |
| Y1 White Flint-Wheaton Line | North Bethesda station | ↔ | Wheaton station | Randolph Road | Entered service on October 1, 1990. Discontinued on July 24, 1998. Replaced by Ride On route 40. |
| Y2 | Silver Spring station | ↔ | Kensington, Maryland | Seminary Road Capitol View Avenue | Discontinued on February 19, 1978. Replaced by Ride On route 5. |
| Y3 Homecrest-Wheaton Line | Wheaton station | ↔ | Grand Pre and Bel Pre Roads (Aspen Hill) | | Entered service on October 1, 1990. Discontinued on July 25, 1998. |
| Y4 | Silver Spring station | ↔ | Kensington, Maryland | Dexter Avenue Brunswick Avenue Plyers Mill Road | Discontinued on February 19, 1978. Replaced by Ride On route 6. |
| Y4 Bel Pre Road–Silver Spring Line | Rockville station | ↔ | Silver Spring station | | Entered service on February 23, 1987. Truncated to Wheaton station on October 1, 1990. Replaced by Ride On route 49 on July 25, 1998. |
| Y4 Leisure World–Olney Line | Leisure World Clubhouse | ↔ | MedStar Montgomery Medical Center | Georgia Avenue | This route operated from October 14, 2014, to December 12, 2014, in order to provide service between Leisure World and MedStar Montgomery Hospital. Replaced by routes Y2 and Y8 on December 14, 2014. |
| Y5 Norbeck–Wheaton Line | Wheaton station | ↔ | Rockville Station | | |
| Y5, Y9 Georgia Avenue–Maryland Line | MedStar Montgomery Medical Center | ↔ | Silver Spring station | Georgia Avenue | Discontinued on August 24, 2014, and replaced by Y7 & Y8. |
| Y6 Georgia Avenue–Maryland Line | Silver Spring station | ↔ | Aspen Hill | Weller Road Connecticut Avenue | Discontinued on July 25, 1998. Replaced by Ride On route 41. |
| Z4 Randolph Road Line | Montgomery College | ↔ | Silver Spring station (Weekday Peak Hours) White Oak (Off-peak) | Colesville Road Randolph Road | |
| Z1, Z4 Glenmont-Silver Spring Line | Glenmont | ↔ | Silver Spring station | Colesville Road Columbia Pike Georgia Avenue | Discontinued on September 26, 2004; replaced by routes C7, Z2, Z6, and Z8. |
| Z2 | Wheaton Plaza | ↔ | Silver Spring station | Forest Glen Road Dallas Avenue Tenbrook Drive Arcola Avenue | Discontinued on February 19, 1978. Replaced by Ride On routes 8,9, and 19. |
| Z3, Z5 Colesville-Fairland Express Line | Burtonsville Park & Ride | ↔ | Silver Spring station | Colesville Road Columbia Pike Old Columbia Pike | Discontinued on September 26, 2004; replaced by routes Z2, Z6, and Z8. |
| Z6 | Four Corners (Marked Franklin via Dale) | ↔ | Silver Spring station | Wayne Avenue Dale Drive Franklin Avenue University Boulevard Dennis Avenue | Discontinued on February 19, 1978. Replaced by Ride On routes. |
| Z7, Z17 Calverton Express Line | Silver Spring station | ↔ | Z7 Calverton (Beltsville Drive & Beltsville Road) Z17 Calverton (Centerpark Office Park) | Colesville Road Columbia Pike Beltsville Drive | Discontinued on September 26, 2004; replaced by routes Z6, and Z9. Z7 was "reincarnated" as the Laurel-Burtonsville Express Line on March 27, 2016. |
| Z8 | Franklin Avenue | ↔ | Silver Spring station | Sligo Avenue Piney Branch Road University Boulevard | Discontinued on February 19, 1978. Replaced by Ride On routes. |
| Z9, Z29 Laurel–Burtonsville Express Line | Silver Spring station | ↔ | South Laurel Park & Ride Lot | Colesville Road Columbia Pike Old Columbia Pike | Discontinued on March 27, 2016 & replaced by Z7. |
| Z11 Burtonsville–Greencastle Express Line | Burtonsville Park & Ride Lot. | ↔ | Silver Spring station (Paul S. Sarbanes Transit Center) | Columbia Pike Castle Blvd | Was suspended as of March 18, 2020. Eventually replaced by Flash BRT on October 14, 2020. |
| Z13 Greencastle–Briggs Chaney Express Line | Silver Spring station | ↔ | Greencastle Park & Ride | Colesville Road Columbia Pike | Introduced on December 30, 2001 Discontinued on March 27, 2016 & replaced by Z11. |
| Z19 Calverton Express Line | Silver Spring station | ↔ | Fairland (Seventh-day Adventist Church Parking Lot) | Colesville Road Carroll Avenue New Hampshire Avenue | Via Takoma station Discontinued on June 29, 2003. |
| Hillside–Addison Road Shuttle Line | Addison Road station | ↔ | Hilliside Fringe Parking Lot | Central Avenue Addison Road | |