| Middlesex to Mexborough | 3,400.01 mi (5,471.78 km) |
| Middlesex to Mickleover | 3,400.93 mi (5,473.27 km) |
| Middlesex to Middlesbrough | 3,381.69 mi (5,442.31 km) |
| Middlesex to Middleton | 3,363.23 mi (5,412.60 km) |
| Middlesex to Middlewich | 3,359.80 mi (5,407.08 km) |
| Middlesex to Midsomer Norton | 3,395.52 mi (5,464.57 km) |
| Middlesex to Mildenhall | 3,494.90 mi (5,624.50 km) |
| Middlesex to Milford Haven | 3,281.46 mi (5,281.00 km) |
| Middlesex to Mill Hill | 3,480.76 mi (5,601.74 km) |
| Middlesex to Milngavie | 3,241.71 mi (5,217.02 km) |
| Middlesex to Milnrow | 3,365.22 mi (5,415.79 km) |
| Middlesex to Milton | 3,374.48 mi (5,430.71 km) |
| Middlesex to Milton Keynes | 3,450.26 mi (5,552.66 km) |
| Middlesex to Minehead | 3,356.09 mi (5,401.11 km) |
| Middlesex to Minster | 3,527.47 mi (5,676.92 km) |
