| Severn to Mattoon (Illinois) | 623.74 mi (1,003.81 km) |
| Severn to Mauldin (South Carolina) | 431.48 mi (694.40 km) |
| Severn to Maumee (Ohio) | 403.44 mi (649.27 km) |
| Severn to Maumelle (Arkansas) | 914.33 mi (1,471.47 km) |
| Severn to Mayagüez (Puerto Rico) | 1,555.83 mi (2,503.86 km) |
| Severn to Mayfield Heights (Ohio) | 299.75 mi (482.40 km) |
| Severn to Mays Chapel (Maryland) | 20.78 mi (33.44 km) |
| Severn to Maywood (California) | 2,309.70 mi (3,717.11 km) |
| Severn to Maywood (Illinois) | 615.06 mi (989.84 km) |
| Severn to McAlester (Oklahoma) | 1,089.43 mi (1,753.26 km) |
| Severn to McAllen (Texas) | 1,531.71 mi (2,465.04 km) |
| Severn to McCalla (Alabama) | 702.31 mi (1,130.25 km) |
| Severn to McComb (Mississippi) | 948.17 mi (1,525.93 km) |
| Severn to McDonough (Georgia) | 571.66 mi (920.00 km) |
| Severn to McFarland (California) | 2,325.93 mi (3,743.22 km) |
