| Rhondda to Montevarchi | 891.67 mi (1,435.01 km) |
| Rhondda to Monticello Conte Otto | 799.26 mi (1,286.28 km) |
| Rhondda to Montichiari | 761.56 mi (1,225.61 km) |
| Rhondda to Montignoso | 818.03 mi (1,316.50 km) |
| Rhondda to Montopoli in Val d'Arno | 855.70 mi (1,377.12 km) |
| Rhondda to Monza | 712.53 mi (1,146.71 km) |
| Rhondda to Morbegno | 699.64 mi (1,125.96 km) |
| Rhondda to Mori | 765.73 mi (1,232.32 km) |
| Rhondda to Morlupo | 993.05 mi (1,598.16 km) |
| Rhondda to Morrovalle | 975.62 mi (1,570.10 km) |
| Rhondda to Mortara | 708.80 mi (1,140.71 km) |
| Rhondda to Mosciano Sant'Angelo | 1,013.26 mi (1,630.68 km) |
| Rhondda to Motta di Livenza | 832.18 mi (1,339.26 km) |
| Rhondda to Motta Sant'Anastasia | 1,323.14 mi (2,129.39 km) |
| Rhondda to Mottola | 1,231.73 mi (1,982.27 km) |
