| Muscle Shoals to Maryland Heights (Missouri) | 316.50 mi (509.36 km) |
| Muscle Shoals to Marysville (California) | 1,887.98 mi (3,038.41 km) |
| Muscle Shoals to Marysville (Ohio) | 445.43 mi (716.86 km) |
| Muscle Shoals to Marysville (Washington) | 1,989.46 mi (3,201.72 km) |
| Muscle Shoals to Maryville (Missouri) | 553.54 mi (890.83 km) |
| Muscle Shoals to Maryville (Tennessee) | 217.59 mi (350.18 km) |
| Muscle Shoals to Mason (Ohio) | 367.88 mi (592.04 km) |
| Muscle Shoals to Mason City (Iowa) | 652.86 mi (1,050.67 km) |
| Muscle Shoals to Massapequa (New York) | 874.29 mi (1,407.03 km) |
| Muscle Shoals to Massapequa Park (New York) | 875.68 mi (1,409.28 km) |
| Muscle Shoals to Massillon (Ohio) | 534.05 mi (859.46 km) |
| Muscle Shoals to Mastic (New York) | 908.12 mi (1,461.49 km) |
| Muscle Shoals to Mastic Beach (New York) | 907.51 mi (1,460.49 km) |
| Muscle Shoals to Matteson (Illinois) | 467.55 mi (752.44 km) |
| Muscle Shoals to Matthews (North Carolina) | 393.00 mi (632.48 km) |
