| Valley to Mexborough | 4,197.07 mi (6,754.52 km) |
| Valley to Mickleover | 4,198.32 mi (6,756.54 km) |
| Valley to Middlesbrough | 4,177.88 mi (6,723.65 km) |
| Valley to Middleton | 4,160.35 mi (6,695.44 km) |
| Valley to Middlewich | 4,157.13 mi (6,690.26 km) |
| Valley to Midsomer Norton | 4,193.09 mi (6,748.12 km) |
| Valley to Mildenhall | 4,292.35 mi (6,907.86 km) |
| Valley to Milford Haven | 4,079.02 mi (6,564.55 km) |
| Valley to Mill Hill | 4,278.38 mi (6,885.38 km) |
| Valley to Milngavie | 4,036.81 mi (6,496.62 km) |
| Valley to Milnrow | 4,162.29 mi (6,698.56 km) |
| Valley to Milton | 4,171.85 mi (6,713.95 km) |
| Valley to Milton Keynes | 4,247.85 mi (6,836.25 km) |
| Valley to Minehead | 4,153.59 mi (6,684.56 km) |
| Valley to Minster | 4,325.09 mi (6,960.57 km) |
