| Hertford to Montevarchi | 785.62 mi (1,264.33 km) |
| Hertford to Monticello Conte Otto | 681.31 mi (1,096.46 km) |
| Hertford to Montichiari | 649.31 mi (1,044.97 km) |
| Hertford to Montignoso | 715.62 mi (1,151.68 km) |
| Hertford to Montopoli in Val d'Arno | 752.55 mi (1,211.12 km) |
| Hertford to Monza | 604.22 mi (972.40 km) |
| Hertford to Morbegno | 586.05 mi (943.16 km) |
| Hertford to Mori | 648.39 mi (1,043.48 km) |
| Hertford to Morlupo | 890.11 mi (1,432.49 km) |
| Hertford to Morrovalle | 862.89 mi (1,388.68 km) |
| Hertford to Mortara | 605.59 mi (974.60 km) |
| Hertford to Mosciano Sant'Angelo | 902.15 mi (1,451.87 km) |
| Hertford to Motta di Livenza | 709.96 mi (1,142.57 km) |
| Hertford to Motta Sant'Anastasia | 1,228.77 mi (1,977.51 km) |
| Hertford to Mottola | 1,119.14 mi (1,801.09 km) |
