# Kentucky Route 121

Kentucky Route 121 (KY 121) is a 69.383-mile-long (111.661 km) state highway in Kentucky. It runs from State Route 119 (SR 119) at the Kentucky–Tennessee state line southeast of New Concord to U.S. Route 51 (US 51) and US 62 in Wickliffe via Murray and Mayfield.

## Major intersections

| County | Location | mi | km | Destinations | Notes |
| Calloway | ​ | 0.000 | 0.000 | SR 119 south | Southern terminus; Tennessee state line |
| Calloway | New Concord | 4.749 | 7.643 | KY 444 north (Dunbar Road) | Southern terminus of KY 444 |
| Calloway | ​ | 5.698 | 9.170 | KY 280 west (Speaker Trail) | Eastern terminus of KY 280 |
| Calloway | ​ | 10.510 | 16.914 | KY 893 west (New Providence Road) | Eastern terminus of KY 893 |
| Calloway | ​ | 13.142 | 21.150 | KY 1497 south (Murray-Paris Road) | Northern terminus of KY 1497 |
| Calloway | Murray | 14.075 | 22.652 | US 641 Bus. south (Glendale Road) | South end of US 641 Bus. |
| Calloway | Murray | 15.127 | 24.345 | KY 94 (Main Street) | |
| Calloway | Murray | 15.604 | 25.112 | KY 2075 south (Chestnut Street) / KY 2594 north (North 4th Street) | Southern terminus of KY 2075; northern terminus of KY 2594 |
| Calloway | Murray | 16.322 | 26.268 | US 641 south (North 12th Street) / KY 1327 west (Chestnut Street) | North end of US 641 Bus. overlap; south end of US 641 overlap; northern terminus of US 641 Bus.; eastern terminus of KY 1327 |
| Calloway | Murray | 16.812 | 27.056 | US 641 north (North 12th Street) | North end of US 641 overlap |
| Calloway | Murray | 17.700 | 28.485 | KY 774 east (Coldwater Road) / Lowes Drive | Western terminus of KY 774 |
| Calloway | ​ | 18.929 | 30.463 | KY 1660 south (Robertson Road) | Northern terminus of KY 1660 |
| Calloway | ​ | 20.592 | 33.140 | KY 783 north (Airport Road) | Southern terminus of KY 783 |
| Calloway | ​ | 21.602 | 34.765 | KY 299 north (Kirksey Road) | South end of KY 299 overlap |
| Calloway | ​ | 22.117 | 35.594 | KY 299 south (Butterworth Road) | North end of KY 299 overlap |
| Calloway | ​ | 24.397 | 39.263 | KY 1836 south (Coopertown Road) | South end of KY 1836 overlap |
| Calloway | ​ | 25.171 | 40.509 | KY 1836 north (Hammond Road) | North end of KY 1836 overlap |
| Calloway–Graves county line | ​ | 26.893 | 43.280 | KY 893 east (County Line Road) / KY 1124 west | Western terminus of KY 893; eastern terminus of KY 1124 |
| Graves | ​ | 28.497 | 45.861 | KY 564 north | South end of KY 564 overlap |
| Graves | Farmington | 29.109 | 46.846 | KY 564 south / Old KY 3122 | North end of KY 564 overlap |
| Graves | ​ | 30.895 | 49.721 | KY 1890 west | Eastern terminus of KY 1890 |
| Graves | ​ | 32.392 | 52.130 | KY 80 east | South end of KY 80 overlap |
| Graves | ​ | 27.518 | 44.286 | KY 1124 east | Western terminus of KY 1124 |
| Graves | ​ | 28.541 | 45.932 | KY 940 north (Jeff Davis Road) / Jeff Davis Road | Southern terminus of KY 940 |
| Graves | ​ | 29.096 | 46.825 | KY 2205 north | Southern terminus of KY 2205 |
| Graves | ​ | 35.628 | 57.338 | KY 80 west / KY 121 Bus. north / KY 97 south | North end of KY 80 overlap; southern terminus of KY 121 Bus.; northern terminus of KY 97 |
| Graves | ​ | 37.105 | 59.715 | KY 464 (Backusburg Road) | |
| Graves | ​ | 37.745 | 60.745 | KY 58 (East Broadway Street) | |
| Graves | Mayfield | 39.067 | 62.872 | US 45 (Paducah Road / KY 121 Bus. south) | Northern terminus of KY 121 Bus. |
| Graves | Mayfield | 40.205 | 64.704 | I-69 / US 45 Byp. – Benton, Fulton | I-69/US 45 Byp. exit 24 |
| Graves | ​ | 40.971 | 65.936 | KY 1830 east (Jimtown Road) / Jimtown Road | Western terminus of KY 1830 |
| Graves | ​ | 42.919 | 69.071 | KY 1276 east (Key Bottom Road) / New Hope Church Road | Western terminus of KY 1276 |
| Graves | ​ | 43.808 | 70.502 | KY 440 north | Southern terminus of KY 440 |
| Graves | ​ | 44.172 | 71.088 | KY 945 north (New Hope Church Road) | Southern terminus of KY 945 |
| Graves | ​ | 47.481 | 76.413 | KY 1213 | |
| Graves | ​ | 49.147 | 79.094 | KY 339 | |
| Carlisle | ​ | 52.580 | 84.619 | KY 408 east | South end of KY 408 overlap |
| Carlisle | ​ | 52.620 | 84.684 | KY 408 west | North end of KY 408 overlap |
| Carlisle | ​ | 54.248 | 87.304 | KY 307 | |
| Carlisle | ​ | 58.268 | 93.773 | US 62 | |
| Carlisle | ​ | 59.750 | 96.158 | KY 1628 east / Magee Springs Road | Western terminus of KY 1628 |
| Ballard | ​ | 62.159 | 100.035 | KY 802 north (New York Road) | Southern terminus of KY 802 |
| Ballard | Wickliffe | 69.050 | 111.125 | KY 286 east (Phillips Drive) | Western terminus of KY 286 |
| Ballard | Wickliffe | 69.249 | 111.445 | KY 1290 east (North Sixth Street) | Western terminus of KY 1290 |
| Ballard | Wickliffe | 69.383 | 111.661 | US 51 / US 62 (Fourth Street) / Court Street | Northern terminus; continues as Court Street beyond US 51 / US 62 |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus ||||||

## Mayfield business loop

Kentucky Route 121 Business is a 3.087-mile-long (4.968 km) business route of Kentucky Route 121. It runs from Kentucky Route 121, Kentucky Route 80, and Kentucky Route 97 southeast of Mayfield to Kentucky Route 121 and U.S. Route 45 north of Mayfield. It runs through downtown, while KY 121 uses a bypass to the east and north. It runs concurrent with U.S. Route 45 for its final two miles.

### Major intersections

The entire route is in Graves County.
| Location | mi | km | Destinations | Notes |
| ​ | 0.000 | 0.000 | KY 80 east / KY 97 south / KY 121 | Southern terminus; south end of KY 80 overlap; northern terminus of KY 97 |
| ​ | 0.175 | 0.282 | KY 80 west | North end of KY 80 overlap |
| Mayfield | 1.209 | 1.946 | KY 303 south (Cuba Road) / South Third Street | Northern terminus of KY 303 |
| Mayfield | 1.723 | 2.773 | KY 464 east (Backusburg Road) | Western terminus of KY 464 |
| Mayfield | 2.045 | 3.291 | KY 58 east (East Broadway Street) / North Sixth Street | South end of KY 58 overlap |
| Mayfield | 2.109 | 3.394 | US 45 south / KY 58 west (South Eighth Street) | North end of KY 58 overlap; south end of US 45 overlap |
| Mayfield | 3.087 | 4.968 | US 45 north (Paducah Road) / KY 121 | Northern terminus; north end of US 45 overlap |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus |||||