| Sulphur to Mattoon (Illinois) | 698.64 mi (1,124.36 km) |
| Sulphur to Mauldin (South Carolina) | 716.21 mi (1,152.63 km) |
| Sulphur to Maumee (Ohio) | 951.63 mi (1,531.50 km) |
| Sulphur to Maumelle (Arkansas) | 324.28 mi (521.87 km) |
| Sulphur to Mayagüez (Puerto Rico) | 1,842.71 mi (2,965.55 km) |
| Sulphur to Mayfield Heights (Ohio) | 1,023.84 mi (1,647.71 km) |
| Sulphur to Mays Chapel (Maryland) | 1,138.12 mi (1,831.63 km) |
| Sulphur to Maywood (California) | 1,472.51 mi (2,369.78 km) |
| Sulphur to Maywood (Illinois) | 861.39 mi (1,386.28 km) |
| Sulphur to McAlester (Oklahoma) | 353.69 mi (569.22 km) |
| Sulphur to McAllen (Texas) | 406.27 mi (653.83 km) |
| Sulphur to McCalla (Alabama) | 427.91 mi (688.65 km) |
| Sulphur to McComb (Mississippi) | 185.14 mi (297.95 km) |
| Sulphur to McDonough (Georgia) | 583.88 mi (939.66 km) |
| Sulphur to McFarland (California) | 1,542.27 mi (2,482.05 km) |
