| London Colney to Mickleover | 96.89 mi (155.92 km) |
| London Colney to Middlesbrough | 200.74 mi (323.06 km) |
| London Colney to Middleton | 149.08 mi (239.92 km) |
| London Colney to Middlewich | 135.63 mi (218.28 km) |
| London Colney to Midsomer Norton | 98.66 mi (158.78 km) |
| London Colney to Mildenhall | 54.85 mi (88.28 km) |
| London Colney to Milford Haven | 202.97 mi (326.65 km) |
| London Colney to Mill Hill | 7.91 mi (12.74 km) |
| London Colney to Milngavie | 334.00 mi (537.52 km) |
| London Colney to Milnrow | 150.67 mi (242.48 km) |
| London Colney to Milton | 120.00 mi (193.12 km) |
| London Colney to Milton Keynes | 29.25 mi (47.07 km) |
| London Colney to Minehead | 141.29 mi (227.38 km) |
| London Colney to Minster | 52.08 mi (83.81 km) |
| London Colney to Mirfield | 147.03 mi (236.63 km) |
