| Caerfyrddin to Mombris | 598.69 mi (963.50 km) |
| Caerfyrddin to Monchengladbach | 463.85 mi (746.49 km) |
| Caerfyrddin to Monschau | 465.88 mi (749.76 km) |
| Caerfyrddin to Montabaur | 534.66 mi (860.46 km) |
| Caerfyrddin to Moosburg | 754.52 mi (1,214.29 km) |
| Caerfyrddin to Morbach | 517.76 mi (833.26 km) |
| Caerfyrddin to Morfelden-Walldorf | 575.37 mi (925.98 km) |
| Caerfyrddin to Morlenbach | 590.90 mi (950.96 km) |
| Caerfyrddin to Morsbach | 522.99 mi (841.66 km) |
| Caerfyrddin to Mosbach | 614.16 mi (988.40 km) |
| Caerfyrddin to Mosigkau | 704.90 mi (1,134.42 km) |
| Caerfyrddin to Mossingen | 637.30 mi (1,025.64 km) |
| Caerfyrddin to Much | 508.77 mi (818.78 km) |
| Caerfyrddin to Mucheln | 691.64 mi (1,113.08 km) |
| Caerfyrddin to Muhlacker | 612.13 mi (985.12 km) |
