| Caernarfon to Menen | 353.67 mi (569.17 km) |
| Caernarfon to Merchtem | 390.94 mi (629.15 km) |
| Caernarfon to Merelbeke | 371.06 mi (597.17 km) |
| Caernarfon to Merksem | 391.27 mi (629.69 km) |
| Caernarfon to Merksplas | 405.08 mi (651.91 km) |
| Caernarfon to Mettet | 428.45 mi (689.53 km) |
| Caernarfon to Meulebeke | 354.77 mi (570.95 km) |
| Caernarfon to Middelkerke | 329.25 mi (529.88 km) |
| Caernarfon to Mol | 419.82 mi (675.63 km) |
| Caernarfon to Mons | 397.07 mi (639.03 km) |
| Caernarfon to Montignies-le-Tilleul | 415.82 mi (669.19 km) |
| Caernarfon to Moorslede | 348.18 mi (560.34 km) |
| Caernarfon to Moortebeek | 398.48 mi (641.29 km) |
| Caernarfon to Morlanwelz-Mariemont | 407.79 mi (656.27 km) |
| Caernarfon to Mortsel | 394.35 mi (634.65 km) |
