| Dover to Mauldin (South Carolina) | 4,138.80 mi (6,660.76 km) |
| Dover to Maumee (Ohio) | 3,876.13 mi (6,238.02 km) |
| Dover to Maumelle (Arkansas) | 4,539.03 mi (7,304.86 km) |
| Dover to Mayagüez (Puerto Rico) | 4,316.45 mi (6,946.65 km) |
| Dover to Mayfield Heights (Ohio) | 3,791.94 mi (6,102.54 km) |
| Dover to Mays Chapel (Maryland) | 3,692.46 mi (5,942.44 km) |
| Dover to Maywood (California) | 5,505.79 mi (8,860.71 km) |
| Dover to Maywood (Illinois) | 4,022.64 mi (6,473.81 km) |
| Dover to McAlester (Oklahoma) | 4,665.44 mi (7,508.30 km) |
| Dover to McAllen (Texas) | 5,215.67 mi (8,393.81 km) |
| Dover to McCalla (Alabama) | 4,402.97 mi (7,085.90 km) |
| Dover to McComb (Mississippi) | 4,644.59 mi (7,474.75 km) |
| Dover to McDonough (Georgia) | 4,279.20 mi (6,886.71 km) |
| Dover to McFarland (California) | 5,441.58 mi (8,757.38 km) |
| Dover to McHenry (Illinois) | 4,018.25 mi (6,466.75 km) |
