| Caerfyrddin to Marly-le-Roi | 349.77 mi (562.90 km) |
| Caerfyrddin to Marmande | 548.32 mi (882.44 km) |
| Caerfyrddin to Maromme | 286.17 mi (460.54 km) |
| Caerfyrddin to Marquette-les-Lille | 329.24 mi (529.85 km) |
| Caerfyrddin to Marseille | 742.69 mi (1,195.24 km) |
| Caerfyrddin to Martigues | 727.45 mi (1,170.72 km) |
| Caerfyrddin to Massy | 361.94 mi (582.49 km) |
| Caerfyrddin to Maubeuge | 375.84 mi (604.85 km) |
| Caerfyrddin to Mauguio | 687.29 mi (1,106.08 km) |
| Caerfyrddin to Mauleon | 376.59 mi (606.06 km) |
| Caerfyrddin to Maurepas | 349.10 mi (561.83 km) |
| Caerfyrddin to Maxeville | 510.50 mi (821.57 km) |
| Caerfyrddin to Mayenne | 295.23 mi (475.12 km) |
| Caerfyrddin to Mazamet | 655.73 mi (1,055.30 km) |
| Caerfyrddin to Meaux | 374.80 mi (603.18 km) |
