| Delaware to Mauldin (South Carolina) | 382.55 mi (615.66 km) |
| Delaware to Maumee (Ohio) | 93.93 mi (151.17 km) |
| Delaware to Maumelle (Arkansas) | 633.24 mi (1,019.11 km) |
| Delaware to Mayagüez (Puerto Rico) | 1,796.52 mi (2,891.21 km) |
| Delaware to Mayfield Heights (Ohio) | 120.05 mi (193.20 km) |
| Delaware to Mays Chapel (Maryland) | 345.58 mi (556.16 km) |
| Delaware to Maywood (California) | 1,968.80 mi (3,168.48 km) |
| Delaware to Maywood (Illinois) | 271.71 mi (437.28 km) |
| Delaware to McAlester (Oklahoma) | 786.52 mi (1,265.78 km) |
| Delaware to McAllen (Texas) | 1,304.60 mi (2,099.56 km) |
| Delaware to McCalla (Alabama) | 529.64 mi (852.37 km) |
| Delaware to McComb (Mississippi) | 749.14 mi (1,205.63 km) |
| Delaware to McDonough (Georgia) | 476.69 mi (767.15 km) |
| Delaware to McFarland (California) | 1,981.21 mi (3,188.46 km) |
| Delaware to McHenry (Illinois) | 305.70 mi (491.97 km) |
