| Hemel Hempstead to Melzo | 623.85 mi (1,004.00 km) |
| Hemel Hempstead to Mendicino | 1,175.93 mi (1,892.47 km) |
| Hemel Hempstead to Menfi | 1,175.26 mi (1,891.40 km) |
| Hemel Hempstead to Mentana | 911.78 mi (1,467.36 km) |
| Hemel Hempstead to Merano | 630.39 mi (1,014.51 km) |
| Hemel Hempstead to Merate | 614.31 mi (988.63 km) |
| Hemel Hempstead to Mercato San Severino | 1,046.63 mi (1,684.38 km) |
| Hemel Hempstead to Mercogliano | 1,038.30 mi (1,670.99 km) |
| Hemel Hempstead to Mesagne | 1,161.05 mi (1,868.53 km) |
| Hemel Hempstead to Messina | 1,215.57 mi (1,956.27 km) |
| Hemel Hempstead to Mestre | 722.24 mi (1,162.33 km) |
| Hemel Hempstead to Mestrino | 707.10 mi (1,137.97 km) |
| Hemel Hempstead to Milan | 618.16 mi (994.83 km) |
| Hemel Hempstead to Milazzo | 1,204.55 mi (1,938.53 km) |
| Hemel Hempstead to Minerbio | 736.99 mi (1,186.07 km) |
