| Ridge to Mattoon (Illinois) | 821.91 mi (1,322.74 km) |
| Ridge to Mauldin (South Carolina) | 665.13 mi (1,070.43 km) |
| Ridge to Maumee (Ohio) | 561.69 mi (903.96 km) |
| Ridge to Maumelle (Arkansas) | 1,140.58 mi (1,835.59 km) |
| Ridge to Mayagüez (Puerto Rico) | 1,605.41 mi (2,583.65 km) |
| Ridge to Mayfield Heights (Ohio) | 447.34 mi (719.93 km) |
| Ridge to Mays Chapel (Maryland) | 223.51 mi (359.70 km) |
| Ridge to Maywood (California) | 2,502.23 mi (4,026.94 km) |
| Ridge to Maywood (Illinois) | 777.47 mi (1,251.22 km) |
| Ridge to McAlester (Oklahoma) | 1,309.92 mi (2,108.11 km) |
| Ridge to McAllen (Texas) | 1,767.35 mi (2,844.27 km) |
| Ridge to McCalla (Alabama) | 938.28 mi (1,510.01 km) |
| Ridge to McComb (Mississippi) | 1,184.08 mi (1,905.59 km) |
| Ridge to McDonough (Georgia) | 805.69 mi (1,296.64 km) |
| Ridge to McFarland (California) | 2,510.27 mi (4,039.88 km) |
