| Sumter to McHenry (Illinois) | 721.16 mi (1,160.59 km) |
| Sumter to McKeesport (Pennsylvania) | 443.41 mi (713.59 km) |
| Sumter to McKinleyville (California) | 2,419.40 mi (3,893.65 km) |
| Sumter to McKinney (Texas) | 937.28 mi (1,508.41 km) |
| Sumter to McLean (Virginia) | 388.73 mi (625.60 km) |
| Sumter to McMinnville (Oregon) | 2,376.96 mi (3,825.35 km) |
| Sumter to McMinnville (Tennessee) | 328.57 mi (528.78 km) |
| Sumter to McNair (Virginia) | 383.85 mi (617.74 km) |
| Sumter to McPherson (Kansas) | 1,009.00 mi (1,623.83 km) |
| Sumter to Mead Valley (California) | 2,104.38 mi (3,386.67 km) |
| Sumter to Meadow Woods (Florida) | 388.91 mi (625.89 km) |
| Sumter to Meadowbrook (Virginia) | 291.53 mi (469.17 km) |
| Sumter to Meadville (Pennsylvania) | 532.77 mi (857.41 km) |
| Sumter to Mebane (North Carolina) | 161.24 mi (259.48 km) |
| Sumter to Mechanicsville (Virginia) | 306.34 mi (493.01 km) |
