| Merthyr Tudful to Montigny-les-Metz | 457.16 mi (735.73 km) |
| Merthyr Tudful to Montivilliers | 217.79 mi (350.50 km) |
| Merthyr Tudful to Montlouis-sur-Loire | 354.89 mi (571.13 km) |
| Merthyr Tudful to Montlucon | 460.87 mi (741.69 km) |
| Merthyr Tudful to Montmagny | 316.50 mi (509.36 km) |
| Merthyr Tudful to Montmorency | 314.95 mi (506.87 km) |
| Merthyr Tudful to Montpellier | 654.66 mi (1,053.57 km) |
| Merthyr Tudful to Montreuil | 324.88 mi (522.85 km) |
| Merthyr Tudful to Montrouge | 322.64 mi (519.24 km) |
| Merthyr Tudful to Morangis | 328.14 mi (528.10 km) |
| Merthyr Tudful to Morieres-les-Avignon | 660.96 mi (1,063.71 km) |
| Merthyr Tudful to Morlaix | 219.62 mi (353.44 km) |
| Merthyr Tudful to Morsang-sur-Orge | 330.59 mi (532.04 km) |
| Merthyr Tudful to Mouans-Sartoux | 738.00 mi (1,187.70 km) |
| Merthyr Tudful to Mougins | 739.79 mi (1,190.58 km) |
