| West Mifflin to Mattoon (Illinois) | 451.98 mi (727.40 km) |
| West Mifflin to Mauldin (South Carolina) | 406.95 mi (654.92 km) |
| West Mifflin to Maumee (Ohio) | 213.08 mi (342.93 km) |
| West Mifflin to Maumelle (Arkansas) | 781.44 mi (1,257.60 km) |
| West Mifflin to Mayagüez (Puerto Rico) | 1,709.05 mi (2,750.45 km) |
| West Mifflin to Mayfield Heights (Ohio) | 113.70 mi (182.98 km) |
| West Mifflin to Mays Chapel (Maryland) | 183.99 mi (296.11 km) |
| West Mifflin to Maywood (California) | 2,135.65 mi (3,437.00 km) |
| West Mifflin to Maywood (Illinois) | 426.12 mi (685.77 km) |
| West Mifflin to McAlester (Oklahoma) | 943.94 mi (1,519.12 km) |
| West Mifflin to McAllen (Texas) | 1,435.05 mi (2,309.49 km) |
| West Mifflin to McCalla (Alabama) | 626.29 mi (1,007.92 km) |
| West Mifflin to McComb (Mississippi) | 863.00 mi (1,388.86 km) |
| West Mifflin to McDonough (Georgia) | 532.24 mi (856.55 km) |
| West Mifflin to McFarland (California) | 2,147.45 mi (3,455.99 km) |
