| Dordrecht to Opwijk | 61.13 mi (98.38 km) |
| Dordrecht to Ostend | 85.27 mi (137.23 km) |
| Dordrecht to Oud-Heverlee | 66.50 mi (107.03 km) |
| Dordrecht to Oud-Turnhout | 35.60 mi (57.29 km) |
| Dordrecht to Oudenaarde | 80.24 mi (129.13 km) |
| Dordrecht to Oudenburg | 83.69 mi (134.68 km) |
| Dordrecht to Oupeye | 85.94 mi (138.31 km) |
| Dordrecht to Overijse | 70.24 mi (113.04 km) |
| Dordrecht to Overpelt | 51.08 mi (82.21 km) |
| Dordrecht to Paal | 56.45 mi (90.85 km) |
| Dordrecht to Peer | 56.68 mi (91.21 km) |
| Dordrecht to Pepinster | 98.20 mi (158.03 km) |
| Dordrecht to Peruwelz | 100.31 mi (161.43 km) |
| Dordrecht to Perwez | 81.17 mi (130.63 km) |
| Dordrecht to Philippeville | 110.40 mi (177.67 km) |
