| Opatija to Menen | 638.30 mi (1,027.25 km) |
| Opatija to Merchtem | 604.74 mi (973.24 km) |
| Opatija to Merelbeke | 623.20 mi (1,002.94 km) |
| Opatija to Merksem | 609.09 mi (980.23 km) |
| Opatija to Merksplas | 600.28 mi (966.06 km) |
| Opatija to Mettet | 563.85 mi (907.43 km) |
| Opatija to Meulebeke | 637.96 mi (1,026.70 km) |
| Opatija to Middelkerke | 663.84 mi (1,068.35 km) |
| Opatija to Mol | 583.84 mi (939.61 km) |
| Opatija to Mons | 594.86 mi (957.33 km) |
| Opatija to Montignies-le-Tilleul | 576.34 mi (927.53 km) |
| Opatija to Moorslede | 643.97 mi (1,036.36 km) |
| Opatija to Moortebeek | 596.48 mi (959.95 km) |
| Opatija to Morlanwelz-Mariemont | 584.39 mi (940.49 km) |
| Opatija to Mortsel | 604.98 mi (973.62 km) |
