| Caerfyrddin to Lubbeek | 400.42 mi (644.42 km) |
| Caerfyrddin to Lummen | 414.12 mi (666.46 km) |
| Caerfyrddin to Maaseik | 437.44 mi (703.99 km) |
| Caerfyrddin to Machelen | 382.80 mi (616.06 km) |
| Caerfyrddin to Maldegem | 336.01 mi (540.76 km) |
| Caerfyrddin to Malmedy | 458.44 mi (737.79 km) |
| Caerfyrddin to Manage | 381.73 mi (614.34 km) |
| Caerfyrddin to Marche-en-Famenne | 433.90 mi (698.30 km) |
| Caerfyrddin to Mariakerke | 348.07 mi (560.16 km) |
| Caerfyrddin to Mechelen | 382.89 mi (616.20 km) |
| Caerfyrddin to Mechelen-aan-de-Maas | 435.32 mi (700.57 km) |
| Caerfyrddin to Meerhout | 407.11 mi (655.18 km) |
| Caerfyrddin to Meise | 378.05 mi (608.42 km) |
| Caerfyrddin to Melle | 354.41 mi (570.36 km) |
| Caerfyrddin to Melsele | 371.85 mi (598.44 km) |
