| Merzenich to Opwijk | 102.58 mi (165.08 km) |
| Merzenich to Ostend | 159.16 mi (256.14 km) |
| Merzenich to Oud-Heverlee | 81.17 mi (130.63 km) |
| Merzenich to Oud-Turnhout | 75.09 mi (120.84 km) |
| Merzenich to Oudenaarde | 127.70 mi (205.52 km) |
| Merzenich to Oudenburg | 155.29 mi (249.91 km) |
| Merzenich to Oupeye | 39.46 mi (63.51 km) |
| Merzenich to Overijse | 87.09 mi (140.16 km) |
| Merzenich to Overpelt | 55.27 mi (88.95 km) |
| Merzenich to Paal | 60.76 mi (97.79 km) |
| Merzenich to Peer | 51.26 mi (82.50 km) |
| Merzenich to Pepinster | 35.88 mi (57.74 km) |
| Merzenich to Peruwelz | 130.64 mi (210.25 km) |
| Merzenich to Perwez | 76.16 mi (122.56 km) |
| Merzenich to Philippeville | 97.03 mi (156.15 km) |
