| Manassas to Mauldin (South Carolina) | 382.29 mi (615.24 km) |
| Manassas to Maumee (Ohio) | 379.98 mi (611.53 km) |
| Manassas to Maumelle (Arkansas) | 866.82 mi (1,395.02 km) |
| Manassas to Mayagüez (Puerto Rico) | 1,549.84 mi (2,494.22 km) |
| Manassas to Mayfield Heights (Ohio) | 283.82 mi (456.77 km) |
| Manassas to Mays Chapel (Maryland) | 65.12 mi (104.80 km) |
| Manassas to Maywood (California) | 2,269.53 mi (3,652.46 km) |
| Manassas to Maywood (Illinois) | 586.67 mi (944.16 km) |
| Manassas to McAlester (Oklahoma) | 1,043.31 mi (1,679.04 km) |
| Manassas to McAllen (Texas) | 1,481.66 mi (2,384.50 km) |
| Manassas to McCalla (Alabama) | 652.19 mi (1,049.60 km) |
| Manassas to McComb (Mississippi) | 898.06 mi (1,445.30 km) |
| Manassas to McDonough (Georgia) | 522.25 mi (840.48 km) |
| Manassas to McFarland (California) | 2,287.62 mi (3,681.57 km) |
| Manassas to McHenry (Illinois) | 618.81 mi (995.87 km) |
