| South Bend to Mattoon (Illinois) | 187.47 mi (301.71 km) |
| South Bend to Mauldin (South Carolina) | 522.60 mi (841.04 km) |
| South Bend to Maumee (Ohio) | 134.80 mi (216.93 km) |
| South Bend to Maumelle (Arkansas) | 576.65 mi (928.03 km) |
| South Bend to Mayagüez (Puerto Rico) | 1,975.58 mi (3,179.39 km) |
| South Bend to Mayfield Heights (Ohio) | 249.06 mi (400.83 km) |
| South Bend to Mays Chapel (Maryland) | 527.80 mi (849.41 km) |
| South Bend to Maywood (California) | 1,809.19 mi (2,911.61 km) |
| South Bend to Maywood (Illinois) | 82.33 mi (132.50 km) |
| South Bend to McAlester (Oklahoma) | 694.27 mi (1,117.31 km) |
| South Bend to McAllen (Texas) | 1,266.36 mi (2,038.01 km) |
| South Bend to McCalla (Alabama) | 580.11 mi (933.59 km) |
| South Bend to McComb (Mississippi) | 757.42 mi (1,218.96 km) |
| South Bend to McDonough (Georgia) | 580.78 mi (934.68 km) |
| South Bend to McFarland (California) | 1,814.30 mi (2,919.83 km) |
