| Martinsburg to Mauldin (South Carolina) | 401.35 mi (645.91 km) |
| Martinsburg to Maumee (Ohio) | 332.30 mi (534.79 km) |
| Martinsburg to Maumelle (Arkansas) | 854.34 mi (1,374.93 km) |
| Martinsburg to Mayagüez (Puerto Rico) | 1,605.58 mi (2,583.93 km) |
| Martinsburg to Mayfield Heights (Ohio) | 231.49 mi (372.55 km) |
| Martinsburg to Mays Chapel (Maryland) | 70.77 mi (113.89 km) |
| Martinsburg to Maywood (California) | 2,239.85 mi (3,604.69 km) |
| Martinsburg to Maywood (Illinois) | 543.09 mi (874.02 km) |
| Martinsburg to McAlester (Oklahoma) | 1,026.30 mi (1,651.66 km) |
| Martinsburg to McAllen (Texas) | 1,483.99 mi (2,388.25 km) |
| Martinsburg to McCalla (Alabama) | 658.53 mi (1,059.80 km) |
| Martinsburg to McComb (Mississippi) | 902.79 mi (1,452.91 km) |
| Martinsburg to McDonough (Georgia) | 538.79 mi (867.10 km) |
| Martinsburg to McFarland (California) | 2,255.13 mi (3,629.28 km) |
| Martinsburg to McHenry (Illinois) | 573.86 mi (923.54 km) |
