| Didcot to Mauldin (South Carolina) | 4,024.05 mi (6,476.08 km) |
| Didcot to Maumee (Ohio) | 3,762.59 mi (6,055.31 km) |
| Didcot to Maumelle (Arkansas) | 4,425.46 mi (7,122.09 km) |
| Didcot to Mayagüez (Puerto Rico) | 4,210.55 mi (6,776.23 km) |
| Didcot to Mayfield Heights (Ohio) | 3,678.03 mi (5,919.22 km) |
| Didcot to Mays Chapel (Maryland) | 3,577.74 mi (5,757.81 km) |
| Didcot to Maywood (California) | 5,401.93 mi (8,693.56 km) |
| Didcot to Maywood (Illinois) | 3,910.06 mi (6,292.63 km) |
| Didcot to McAlester (Oklahoma) | 4,552.63 mi (7,326.75 km) |
| Didcot to McAllen (Texas) | 5,101.56 mi (8,210.17 km) |
| Didcot to McCalla (Alabama) | 4,288.40 mi (6,901.52 km) |
| Didcot to McComb (Mississippi) | 4,530.13 mi (7,290.53 km) |
| Didcot to McDonough (Georgia) | 4,164.45 mi (6,702.04 km) |
| Didcot to McFarland (California) | 5,339.22 mi (8,592.64 km) |
| Didcot to McHenry (Illinois) | 3,905.94 mi (6,286.01 km) |
