| South Bend to McHenry (Illinois) | 113.51 mi (182.68 km) |
| South Bend to McKeesport (Pennsylvania) | 347.39 mi (559.06 km) |
| South Bend to McKinleyville (California) | 1,947.28 mi (3,133.84 km) |
| South Bend to McKinney (Texas) | 816.26 mi (1,313.65 km) |
| South Bend to McLean (Virginia) | 513.76 mi (826.82 km) |
| South Bend to McMinnville (Oregon) | 1,851.83 mi (2,980.24 km) |
| South Bend to McMinnville (Tennessee) | 414.72 mi (667.44 km) |
| South Bend to McNair (Virginia) | 502.93 mi (809.39 km) |
| South Bend to McPherson (Kansas) | 643.88 mi (1,036.23 km) |
| South Bend to Mead Valley (California) | 1,767.80 mi (2,845.00 km) |
| South Bend to Meadow Woods (Florida) | 960.23 mi (1,545.34 km) |
| South Bend to Meadowbrook (Virginia) | 552.42 mi (889.03 km) |
| South Bend to Meadville (Pennsylvania) | 315.99 mi (508.53 km) |
| South Bend to Mebane (North Carolina) | 538.93 mi (867.32 km) |
| South Bend to Mechanicsville (Virginia) | 550.17 mi (885.42 km) |
