| Castelldefels to Menen | 659.73 mi (1,061.74 km) |
| Castelldefels to Merchtem | 677.87 mi (1,090.92 km) |
| Castelldefels to Merelbeke | 676.88 mi (1,089.33 km) |
| Castelldefels to Merksem | 698.25 mi (1,123.73 km) |
| Castelldefels to Merksplas | 710.28 mi (1,143.09 km) |
| Castelldefels to Mettet | 637.64 mi (1,026.18 km) |
| Castelldefels to Meulebeke | 671.02 mi (1,079.91 km) |
| Castelldefels to Middelkerke | 685.52 mi (1,103.24 km) |
| Castelldefels to Mol | 700.34 mi (1,127.09 km) |
| Castelldefels to Mons | 640.60 mi (1,030.94 km) |
| Castelldefels to Montignies-le-Tilleul | 639.47 mi (1,029.12 km) |
| Castelldefels to Moorslede | 666.04 mi (1,071.90 km) |
| Castelldefels to Moortebeek | 671.07 mi (1,079.99 km) |
| Castelldefels to Morlanwelz-Mariemont | 642.74 mi (1,034.39 km) |
| Castelldefels to Mortsel | 693.29 mi (1,115.74 km) |
