| Hemel Hempstead to Massarosa | 738.84 mi (1,189.05 km) |
| Hemel Hempstead to Matelica | 857.94 mi (1,380.73 km) |
| Hemel Hempstead to Matera | 1,114.16 mi (1,793.06 km) |
| Hemel Hempstead to Matino | 1,200.24 mi (1,931.59 km) |
| Hemel Hempstead to Mazzarino | 1,227.61 mi (1,975.65 km) |
| Hemel Hempstead to Meda | 607.19 mi (977.18 km) |
| Hemel Hempstead to Medesano | 685.74 mi (1,103.59 km) |
| Hemel Hempstead to Medicina | 749.19 mi (1,205.70 km) |
| Hemel Hempstead to Meldola | 780.91 mi (1,256.76 km) |
| Hemel Hempstead to Melegnano | 628.05 mi (1,010.75 km) |
| Hemel Hempstead to Melendugno | 1,195.25 mi (1,923.56 km) |
| Hemel Hempstead to Melfi | 1,064.35 mi (1,712.91 km) |
| Hemel Hempstead to Melilli | 1,260.84 mi (2,029.12 km) |
| Hemel Hempstead to Melito di Napoli | 1,022.13 mi (1,644.96 km) |
| Hemel Hempstead to Melito di Porto Salvo | 1,238.40 mi (1,993.01 km) |
