| Opole to Menen | 646.74 mi (1,040.82 km) |
| Opole to Merchtem | 597.55 mi (961.66 km) |
| Opole to Merelbeke | 618.40 mi (995.22 km) |
| Opole to Merksem | 587.74 mi (945.88 km) |
| Opole to Merksplas | 569.25 mi (916.12 km) |
| Opole to Mettet | 583.28 mi (938.70 km) |
| Opole to Meulebeke | 638.73 mi (1,027.93 km) |
| Opole to Middelkerke | 658.05 mi (1,059.03 km) |
| Opole to Mol | 558.62 mi (899.01 km) |
| Opole to Mons | 613.06 mi (986.62 km) |
| Opole to Montignies-le-Tilleul | 594.68 mi (957.05 km) |
| Opole to Moorslede | 648.76 mi (1,044.08 km) |
| Opole to Moortebeek | 593.47 mi (955.10 km) |
| Opole to Morlanwelz-Mariemont | 600.68 mi (966.70 km) |
| Opole to Mortsel | 586.80 mi (944.36 km) |
