| Portchester to Opwijk | 231.18 mi (372.05 km) |
| Portchester to Ostend | 177.48 mi (285.63 km) |
| Portchester to Oud-Heverlee | 252.43 mi (406.25 km) |
| Portchester to Oud-Turnhout | 266.87 mi (429.49 km) |
| Portchester to Oudenaarde | 205.88 mi (331.33 km) |
| Portchester to Oudenburg | 180.62 mi (290.68 km) |
| Portchester to Oupeye | 295.54 mi (475.62 km) |
| Portchester to Overijse | 246.78 mi (397.15 km) |
| Portchester to Overpelt | 285.13 mi (458.87 km) |
| Portchester to Paal | 274.23 mi (441.33 km) |
| Portchester to Peer | 286.52 mi (461.11 km) |
| Portchester to Pepinster | 304.02 mi (489.27 km) |
| Portchester to Peruwelz | 207.11 mi (333.30 km) |
| Portchester to Perwez | 259.91 mi (418.29 km) |
| Portchester to Philippeville | 252.93 mi (407.05 km) |
