| Didcot to McKeesport (Pennsylvania) | 3,666.46 mi (5,900.59 km) |
| Didcot to McKinleyville (California) | 5,180.25 mi (8,336.80 km) |
| Didcot to McKinney (Texas) | 4,675.14 mi (7,523.91 km) |
| Didcot to McLean (Virginia) | 3,621.83 mi (5,828.78 km) |
| Didcot to McMinnville (Oregon) | 4,909.27 mi (7,900.71 km) |
| Didcot to McMinnville (Tennessee) | 4,121.78 mi (6,633.37 km) |
| Didcot to McNair (Virginia) | 3,630.36 mi (5,842.50 km) |
| Didcot to McPherson (Kansas) | 4,449.62 mi (7,160.98 km) |
| Didcot to Mead Valley (California) | 5,381.36 mi (8,660.45 km) |
| Didcot to Meadow Woods (Florida) | 4,297.94 mi (6,916.86 km) |
| Didcot to Meadowbrook (Virginia) | 3,701.88 mi (5,957.60 km) |
| Didcot to Meadville (Pennsylvania) | 3,620.49 mi (5,826.61 km) |
| Didcot to Mebane (North Carolina) | 3,838.08 mi (6,176.80 km) |
| Didcot to Mechanicsville (Virginia) | 3,688.07 mi (5,935.38 km) |
| Didcot to Medford (Massachusetts) | 3,222.82 mi (5,186.63 km) |
