| Birkenhead to Opwijk | 347.74 mi (559.64 km) |
| Birkenhead to Ostend | 291.83 mi (469.66 km) |
| Birkenhead to Oud-Heverlee | 370.52 mi (596.29 km) |
| Birkenhead to Oud-Turnhout | 366.45 mi (589.75 km) |
| Birkenhead to Oudenaarde | 330.86 mi (532.46 km) |
| Birkenhead to Oudenburg | 296.36 mi (476.94 km) |
| Birkenhead to Oupeye | 411.59 mi (662.39 km) |
| Birkenhead to Overijse | 367.40 mi (591.27 km) |
| Birkenhead to Overpelt | 386.31 mi (621.71 km) |
| Birkenhead to Paal | 382.53 mi (615.62 km) |
| Birkenhead to Peer | 390.33 mi (628.18 km) |
| Birkenhead to Pepinster | 423.11 mi (680.93 km) |
| Birkenhead to Peruwelz | 343.89 mi (553.43 km) |
| Birkenhead to Perwez | 383.71 mi (617.52 km) |
| Birkenhead to Philippeville | 391.01 mi (629.27 km) |
