| Karlovo to Menen | 1,165.29 mi (1,875.35 km) |
| Karlovo to Merchtem | 1,124.58 mi (1,809.84 km) |
| Karlovo to Merelbeke | 1,144.90 mi (1,842.53 km) |
| Karlovo to Merksem | 1,123.85 mi (1,808.66 km) |
| Karlovo to Merksplas | 1,110.68 mi (1,787.47 km) |
| Karlovo to Mettet | 1,090.59 mi (1,755.14 km) |
| Karlovo to Meulebeke | 1,162.34 mi (1,870.61 km) |
| Karlovo to Middelkerke | 1,187.15 mi (1,910.53 km) |
| Karlovo to Mol | 1,095.54 mi (1,763.10 km) |
| Karlovo to Mons | 1,122.91 mi (1,807.14 km) |
| Karlovo to Montignies-le-Tilleul | 1,103.44 mi (1,775.82 km) |
| Karlovo to Moorslede | 1,170.00 mi (1,882.93 km) |
| Karlovo to Moortebeek | 1,117.37 mi (1,798.23 km) |
| Karlovo to Morlanwelz-Mariemont | 1,111.26 mi (1,788.40 km) |
| Karlovo to Mortsel | 1,120.72 mi (1,803.63 km) |
