| Ourem to Opwijk | 994.66 mi (1,600.75 km) |
| Ourem to Ostend | 972.08 mi (1,564.41 km) |
| Ourem to Oud-Heverlee | 1,002.63 mi (1,613.57 km) |
| Ourem to Oud-Turnhout | 1,036.09 mi (1,667.43 km) |
| Ourem to Oudenaarde | 971.54 mi (1,563.55 km) |
| Ourem to Oudenburg | 972.01 mi (1,564.31 km) |
| Ourem to Oupeye | 1,027.37 mi (1,653.39 km) |
| Ourem to Overijse | 996.08 mi (1,603.03 km) |
| Ourem to Overpelt | 1,044.41 mi (1,680.82 km) |
| Ourem to Paal | 1,028.27 mi (1,654.85 km) |
| Ourem to Peer | 1,041.51 mi (1,676.14 km) |
| Ourem to Pepinster | 1,026.44 mi (1,651.89 km) |
| Ourem to Peruwelz | 954.03 mi (1,535.36 km) |
| Ourem to Perwez | 997.04 mi (1,604.58 km) |
| Ourem to Philippeville | 968.27 mi (1,558.28 km) |
