| Portugalete to Menen | 591.45 mi (951.85 km) |
| Portugalete to Merchtem | 628.09 mi (1,010.81 km) |
| Portugalete to Merelbeke | 618.08 mi (994.70 km) |
| Portugalete to Merksem | 648.87 mi (1,044.25 km) |
| Portugalete to Merksplas | 666.59 mi (1,072.77 km) |
| Portugalete to Mettet | 603.99 mi (972.03 km) |
| Portugalete to Meulebeke | 604.30 mi (972.52 km) |
| Portugalete to Middelkerke | 608.06 mi (978.58 km) |
| Portugalete to Mol | 663.07 mi (1,067.10 km) |
| Portugalete to Mons | 591.91 mi (952.59 km) |
| Portugalete to Montignies-le-Tilleul | 599.83 mi (965.33 km) |
| Portugalete to Moorslede | 595.73 mi (958.74 km) |
| Portugalete to Moortebeek | 624.52 mi (1,005.07 km) |
| Portugalete to Morlanwelz-Mariemont | 599.40 mi (964.64 km) |
| Portugalete to Mortsel | 645.23 mi (1,038.39 km) |
