| Pierrelaye to Opwijk | 161.85 mi (260.47 km) |
| Pierrelaye to Ostend | 156.00 mi (251.05 km) |
| Pierrelaye to Oud-Heverlee | 167.85 mi (270.13 km) |
| Pierrelaye to Oud-Turnhout | 202.07 mi (325.20 km) |
| Pierrelaye to Oudenaarde | 141.77 mi (228.15 km) |
| Pierrelaye to Oudenburg | 153.97 mi (247.79 km) |
| Pierrelaye to Oupeye | 194.30 mi (312.69 km) |
| Pierrelaye to Overijse | 161.37 mi (259.71 km) |
| Pierrelaye to Overpelt | 209.54 mi (337.22 km) |
| Pierrelaye to Paal | 193.39 mi (311.23 km) |
| Pierrelaye to Peer | 206.63 mi (332.54 km) |
| Pierrelaye to Pepinster | 195.22 mi (314.18 km) |
| Pierrelaye to Peruwelz | 121.43 mi (195.43 km) |
| Pierrelaye to Perwez | 162.32 mi (261.23 km) |
| Pierrelaye to Philippeville | 134.75 mi (216.86 km) |
