| Opovo to Menen | 891.36 mi (1,434.50 km) |
| Opovo to Merchtem | 850.38 mi (1,368.55 km) |
| Opovo to Merelbeke | 870.73 mi (1,401.31 km) |
| Opovo to Merksem | 849.59 mi (1,367.29 km) |
| Opovo to Merksplas | 836.47 mi (1,346.17 km) |
| Opovo to Mettet | 816.77 mi (1,314.47 km) |
| Opovo to Meulebeke | 888.27 mi (1,429.53 km) |
| Opovo to Middelkerke | 913.00 mi (1,469.34 km) |
| Opovo to Mol | 821.30 mi (1,321.75 km) |
| Opovo to Mons | 849.13 mi (1,366.54 km) |
| Opovo to Montignies-le-Tilleul | 829.62 mi (1,335.15 km) |
| Opovo to Moorslede | 896.01 mi (1,441.98 km) |
| Opovo to Moortebeek | 843.20 mi (1,357.00 km) |
| Opovo to Morlanwelz-Mariemont | 837.41 mi (1,347.68 km) |
| Opovo to Mortsel | 846.47 mi (1,362.26 km) |
