| Norristown to Mattoon (Illinois) | 692.09 mi (1,113.81 km) |
| Norristown to Mauldin (South Carolina) | 530.73 mi (854.13 km) |
| Norristown to Maumee (Ohio) | 446.21 mi (718.10 km) |
| Norristown to Maumelle (Arkansas) | 1,001.65 mi (1,612.01 km) |
| Norristown to Mayagüez (Puerto Rico) | 1,591.58 mi (2,561.39 km) |
| Norristown to Mayfield Heights (Ohio) | 333.79 mi (537.19 km) |
| Norristown to Mays Chapel (Maryland) | 84.34 mi (135.73 km) |
| Norristown to Maywood (California) | 2,376.95 mi (3,825.34 km) |
| Norristown to Maywood (Illinois) | 662.61 mi (1,066.37 km) |
| Norristown to McAlester (Oklahoma) | 1,172.75 mi (1,887.36 km) |
| Norristown to McAllen (Texas) | 1,627.93 mi (2,619.91 km) |
| Norristown to McCalla (Alabama) | 799.68 mi (1,286.96 km) |
| Norristown to McComb (Mississippi) | 1,045.16 mi (1,682.02 km) |
| Norristown to McDonough (Georgia) | 670.85 mi (1,079.63 km) |
| Norristown to McFarland (California) | 2,388.77 mi (3,844.35 km) |
