| Merthyr Tudful to Mions | 565.67 mi (910.35 km) |
| Merthyr Tudful to Mios | 505.77 mi (813.96 km) |
| Merthyr Tudful to Miramas | 684.59 mi (1,101.74 km) |
| Merthyr Tudful to Miribel | 557.05 mi (896.49 km) |
| Merthyr Tudful to Mitry-Mory | 325.63 mi (524.06 km) |
| Merthyr Tudful to Moissac | 566.50 mi (911.69 km) |
| Merthyr Tudful to Moissy-Cramayel | 340.61 mi (548.16 km) |
| Merthyr Tudful to Molsheim | 529.00 mi (851.35 km) |
| Merthyr Tudful to Mondeville | 222.65 mi (358.31 km) |
| Merthyr Tudful to Monistrol-sur-Loire | 563.32 mi (906.58 km) |
| Merthyr Tudful to Mons-en-Baroeul | 291.06 mi (468.42 km) |
| Merthyr Tudful to Mont-de-Marsan | 558.66 mi (899.08 km) |
| Merthyr Tudful to Mont-Saint-Aignan | 251.26 mi (404.36 km) |
| Merthyr Tudful to Mont-Saint-Martin | 428.77 mi (690.04 km) |
| Merthyr Tudful to Montargis | 375.31 mi (604.01 km) |
