| Caerphilly to Mions | 552.78 mi (889.61 km) |
| Caerphilly to Mios | 493.09 mi (793.55 km) |
| Caerphilly to Miramas | 671.38 mi (1,080.48 km) |
| Caerphilly to Miribel | 544.21 mi (875.83 km) |
| Caerphilly to Mitry-Mory | 313.67 mi (504.80 km) |
| Caerphilly to Moissac | 553.33 mi (890.50 km) |
| Caerphilly to Moissy-Cramayel | 328.32 mi (528.37 km) |
| Caerphilly to Molsheim | 518.65 mi (834.69 km) |
| Caerphilly to Mondeville | 209.45 mi (337.08 km) |
| Caerphilly to Monistrol-sur-Loire | 550.21 mi (885.47 km) |
| Caerphilly to Mons-en-Baroeul | 282.02 mi (453.87 km) |
| Caerphilly to Mont-de-Marsan | 545.90 mi (878.54 km) |
| Caerphilly to Mont-Saint-Aignan | 238.96 mi (384.57 km) |
| Caerphilly to Mont-Saint-Martin | 418.93 mi (674.21 km) |
| Caerphilly to Montargis | 362.66 mi (583.65 km) |
