| Harrow Weald to Melzo | 613.00 mi (986.52 km) |
| Harrow Weald to Mendicino | 1,165.01 mi (1,874.90 km) |
| Harrow Weald to Menfi | 1,163.77 mi (1,872.91 km) |
| Harrow Weald to Mentana | 900.74 mi (1,449.60 km) |
| Harrow Weald to Merano | 620.53 mi (998.64 km) |
| Harrow Weald to Merate | 603.52 mi (971.28 km) |
| Harrow Weald to Mercato San Severino | 1,035.73 mi (1,666.84 km) |
| Harrow Weald to Mercogliano | 1,027.43 mi (1,653.48 km) |
| Harrow Weald to Mesagne | 1,150.64 mi (1,851.78 km) |
| Harrow Weald to Messina | 1,204.42 mi (1,938.33 km) |
| Harrow Weald to Mestre | 712.10 mi (1,146.02 km) |
| Harrow Weald to Mestrino | 696.83 mi (1,121.44 km) |
| Harrow Weald to Milan | 607.24 mi (977.25 km) |
| Harrow Weald to Milazzo | 1,193.36 mi (1,920.53 km) |
| Harrow Weald to Minerbio | 726.34 mi (1,168.93 km) |
