| Merthyr Tudful to Maisons-Alfort | 327.15 mi (526.50 km) |
| Merthyr Tudful to Maisons-Laffitte | 310.72 mi (500.06 km) |
| Merthyr Tudful to Maizieres-les-Metz | 453.98 mi (730.62 km) |
| Merthyr Tudful to Malakoff | 321.71 mi (517.75 km) |
| Merthyr Tudful to Mandelieu-la-Napoule | 741.07 mi (1,192.63 km) |
| Merthyr Tudful to Manosque | 691.33 mi (1,112.60 km) |
| Merthyr Tudful to Mantes-la-Jolie | 294.13 mi (473.36 km) |
| Merthyr Tudful to Mantes-la-Ville | 294.68 mi (474.25 km) |
| Merthyr Tudful to Marck | 236.36 mi (380.39 km) |
| Merthyr Tudful to Marcq-en-Baroeul | 289.80 mi (466.40 km) |
| Merthyr Tudful to Margny-les-Compiegne | 315.41 mi (507.60 km) |
| Merthyr Tudful to Marguerittes | 653.73 mi (1,052.07 km) |
| Merthyr Tudful to Marignane | 699.96 mi (1,126.47 km) |
| Merthyr Tudful to Marly | 458.24 mi (737.47 km) |
| Merthyr Tudful to Marly | 315.60 mi (507.91 km) |
