| Castalla to Menen | 862.90 mi (1,388.70 km) |
| Castalla to Merchtem | 887.37 mi (1,428.08 km) |
| Castalla to Merelbeke | 883.55 mi (1,421.94 km) |
| Castalla to Merksem | 908.28 mi (1,461.74 km) |
| Castalla to Merksplas | 922.22 mi (1,484.17 km) |
| Castalla to Mettet | 850.93 mi (1,369.44 km) |
| Castalla to Meulebeke | 874.97 mi (1,408.13 km) |
| Castalla to Middelkerke | 886.10 mi (1,426.04 km) |
| Castalla to Mol | 913.91 mi (1,470.79 km) |
| Castalla to Mons | 849.59 mi (1,367.29 km) |
| Castalla to Montignies-le-Tilleul | 851.11 mi (1,369.73 km) |
| Castalla to Moorslede | 868.67 mi (1,397.98 km) |
| Castalla to Moortebeek | 881.40 mi (1,418.47 km) |
| Castalla to Morlanwelz-Mariemont | 853.38 mi (1,373.39 km) |
| Castalla to Mortsel | 903.62 mi (1,454.23 km) |
