| Portishead to Opwijk | 302.55 mi (486.91 km) |
| Portishead to Ostend | 245.76 mi (395.50 km) |
| Portishead to Oud-Heverlee | 324.91 mi (522.90 km) |
| Portishead to Oud-Turnhout | 333.94 mi (537.42 km) |
| Portishead to Oudenaarde | 279.03 mi (449.05 km) |
| Portishead to Oudenburg | 249.56 mi (401.63 km) |
| Portishead to Oupeye | 368.44 mi (592.95 km) |
| Portishead to Overijse | 319.87 mi (514.78 km) |
| Portishead to Overpelt | 353.26 mi (568.51 km) |
| Portishead to Paal | 344.30 mi (554.10 km) |
| Portishead to Peer | 355.52 mi (572.15 km) |
| Portishead to Pepinster | 377.96 mi (608.27 km) |
| Portishead to Peruwelz | 283.81 mi (456.74 km) |
| Portishead to Perwez | 334.26 mi (537.95 km) |
| Portishead to Philippeville | 330.99 mi (532.68 km) |
