| Rhondda to Montigny-les-Metz | 455.87 mi (733.65 km) |
| Rhondda to Montivilliers | 213.20 mi (343.12 km) |
| Rhondda to Montlouis-sur-Loire | 348.57 mi (560.98 km) |
| Rhondda to Montlucon | 455.07 mi (732.37 km) |
| Rhondda to Montmagny | 312.97 mi (503.68 km) |
| Rhondda to Montmorency | 311.43 mi (501.19 km) |
| Rhondda to Montpellier | 648.33 mi (1,043.38 km) |
| Rhondda to Montreuil | 321.27 mi (517.03 km) |
| Rhondda to Montrouge | 318.88 mi (513.18 km) |
| Rhondda to Morangis | 324.24 mi (521.82 km) |
| Rhondda to Morieres-les-Avignon | 655.19 mi (1,054.43 km) |
| Rhondda to Morlaix | 210.72 mi (339.12 km) |
| Rhondda to Morsang-sur-Orge | 326.64 mi (525.68 km) |
| Rhondda to Mouans-Sartoux | 732.97 mi (1,179.61 km) |
| Rhondda to Mougins | 734.76 mi (1,182.49 km) |
