| Hertford to Melzo | 613.14 mi (986.75 km) |
| Hertford to Mendicino | 1,165.31 mi (1,875.39 km) |
| Hertford to Menfi | 1,167.22 mi (1,878.45 km) |
| Hertford to Mentana | 901.59 mi (1,450.97 km) |
| Hertford to Merano | 617.39 mi (993.59 km) |
| Hertford to Merate | 603.38 mi (971.04 km) |
| Hertford to Mercato San Severino | 1,035.96 mi (1,667.22 km) |
| Hertford to Mercogliano | 1,027.57 mi (1,653.72 km) |
| Hertford to Mesagne | 1,149.07 mi (1,849.25 km) |
| Hertford to Messina | 1,205.78 mi (1,940.51 km) |
| Hertford to Mestre | 709.72 mi (1,142.19 km) |
| Hertford to Mestrino | 694.88 mi (1,118.30 km) |
| Hertford to Milan | 607.65 mi (977.92 km) |
| Hertford to Milazzo | 1,194.92 mi (1,923.03 km) |
| Hertford to Minerbio | 725.64 mi (1,167.81 km) |
