| Castelo Branco to Menen | 915.50 mi (1,473.35 km) |
| Castelo Branco to Merchtem | 955.44 mi (1,537.63 km) |
| Castelo Branco to Merelbeke | 943.66 mi (1,518.67 km) |
| Castelo Branco to Merksem | 975.78 mi (1,570.37 km) |
| Castelo Branco to Merksplas | 994.30 mi (1,600.18 km) |
| Castelo Branco to Mettet | 934.81 mi (1,504.44 km) |
| Castelo Branco to Meulebeke | 928.32 mi (1,493.99 km) |
| Castelo Branco to Middelkerke | 928.95 mi (1,495.01 km) |
| Castelo Branco to Mol | 992.12 mi (1,596.66 km) |
| Castelo Branco to Mons | 920.39 mi (1,481.22 km) |
| Castelo Branco to Montignies-le-Tilleul | 929.77 mi (1,496.32 km) |
| Castelo Branco to Moorslede | 919.10 mi (1,479.14 km) |
| Castelo Branco to Moortebeek | 952.62 mi (1,533.09 km) |
| Castelo Branco to Morlanwelz-Mariemont | 928.70 mi (1,494.60 km) |
| Castelo Branco to Mortsel | 972.52 mi (1,565.12 km) |
