| Caerfyrddin to Mengen | 659.89 mi (1,061.99 km) |
| Caerfyrddin to Meppen | 493.63 mi (794.42 km) |
| Caerfyrddin to Merchweiler | 527.11 mi (848.31 km) |
| Caerfyrddin to Mering | 721.01 mi (1,160.35 km) |
| Caerfyrddin to Merseburg | 699.24 mi (1,125.32 km) |
| Caerfyrddin to Merzenich | 472.91 mi (761.07 km) |
| Caerfyrddin to Merzig | 506.36 mi (814.91 km) |
| Caerfyrddin to Meschede | 541.14 mi (870.88 km) |
| Caerfyrddin to Messkirch | 652.98 mi (1,050.87 km) |
| Caerfyrddin to Messstetten | 640.67 mi (1,031.06 km) |
| Caerfyrddin to Mettingen | 513.96 mi (827.13 km) |
| Caerfyrddin to Mettlach | 504.42 mi (811.79 km) |
| Caerfyrddin to Mettmann | 486.04 mi (782.20 km) |
| Caerfyrddin to Metzingen | 642.65 mi (1,034.24 km) |
| Caerfyrddin to Meuselwitz | 716.02 mi (1,152.31 km) |
