| Llantrisant to Montevarchi | 887.37 mi (1,428.09 km) |
| Llantrisant to Monticello Conte Otto | 795.43 mi (1,280.11 km) |
| Llantrisant to Montichiari | 757.51 mi (1,219.09 km) |
| Llantrisant to Montignoso | 813.64 mi (1,309.42 km) |
| Llantrisant to Montopoli in Val d'Arno | 851.32 mi (1,370.06 km) |
| Llantrisant to Monza | 708.36 mi (1,139.99 km) |
| Llantrisant to Morbegno | 695.66 mi (1,119.56 km) |
| Llantrisant to Mori | 761.88 mi (1,226.13 km) |
| Llantrisant to Morlupo | 988.63 mi (1,591.05 km) |
| Llantrisant to Morrovalle | 971.53 mi (1,563.53 km) |
| Llantrisant to Mortara | 704.46 mi (1,133.73 km) |
| Llantrisant to Mosciano Sant'Angelo | 1,009.10 mi (1,623.99 km) |
| Llantrisant to Motta di Livenza | 828.53 mi (1,333.40 km) |
| Llantrisant to Motta Sant'Anastasia | 1,318.45 mi (2,121.84 km) |
| Llantrisant to Mottola | 1,227.60 mi (1,975.63 km) |
