| Harrow Weald to Manerbio | 643.64 mi (1,035.84 km) |
| Harrow Weald to Manfredonia | 1,030.07 mi (1,657.74 km) |
| Harrow Weald to Maniago | 700.58 mi (1,127.48 km) |
| Harrow Weald to Mantova | 676.43 mi (1,088.61 km) |
| Harrow Weald to Maranello | 710.12 mi (1,142.83 km) |
| Harrow Weald to Marano di Napoli | 1,010.46 mi (1,626.18 km) |
| Harrow Weald to Marano Vicentino | 673.30 mi (1,083.57 km) |
| Harrow Weald to Marcianise | 1,007.02 mi (1,620.64 km) |
| Harrow Weald to Marcon | 711.48 mi (1,145.02 km) |
| Harrow Weald to Mareno di Piave | 700.74 mi (1,127.73 km) |
| Harrow Weald to Margherita di Savoia | 1,051.82 mi (1,692.74 km) |
| Harrow Weald to Mariano Comense | 595.20 mi (957.88 km) |
| Harrow Weald to Marigliano | 1,017.30 mi (1,637.18 km) |
| Harrow Weald to Marino | 914.90 mi (1,472.38 km) |
| Harrow Weald to Marostica | 679.28 mi (1,093.19 km) |
