List of numbered routes in Massachusetts List List

| Name_ | Route_numbers | Length_mi | Location_ | Notes_ |
|---|---|---|---|---|
| Mid-Cape Highway |  | 36.6 | Bourne to Orleans | The Mid-Cape Highway is the main highway on Cape Cod, a 36-mile (58 km) long freeway running from Route 3 and the Sagamore Bridge east to the Orleans Rotary. |
| Mohawk Trail |  | 65 | Williamstown , to Orange | The 65-mile (105 km) Mohawk Trail comprises the western section of Route 2, from the New York border east to Orange, and is regarded as one of the most scenic drives in the area. |
| Mystic Valley Parkway |  |  | Arlington, , Medford, , Winchester | Runs from the Alewife Brook Parkway to the Revere Beach Parkway. |