| Hemel Hempstead to Manerbio | 654.36 mi (1,053.09 km) |
| Hemel Hempstead to Manfredonia | 1,040.59 mi (1,674.67 km) |
| Hemel Hempstead to Maniago | 710.27 mi (1,143.07 km) |
| Hemel Hempstead to Mantova | 687.06 mi (1,105.72 km) |
| Hemel Hempstead to Maranello | 720.93 mi (1,160.23 km) |
| Hemel Hempstead to Marano di Napoli | 1,021.44 mi (1,643.85 km) |
| Hemel Hempstead to Marano Vicentino | 683.55 mi (1,100.07 km) |
| Hemel Hempstead to Marcianise | 1,017.95 mi (1,638.23 km) |
| Hemel Hempstead to Marcon | 721.57 mi (1,161.26 km) |
| Hemel Hempstead to Mareno di Piave | 710.68 mi (1,143.74 km) |
| Hemel Hempstead to Margherita di Savoia | 1,062.36 mi (1,709.70 km) |
| Hemel Hempstead to Mariano Comense | 606.05 mi (975.34 km) |
| Hemel Hempstead to Marigliano | 1,028.22 mi (1,654.76 km) |
| Hemel Hempstead to Marino | 925.97 mi (1,490.21 km) |
| Hemel Hempstead to Marostica | 689.45 mi (1,109.57 km) |
