| Birkenhead to Nuth | 413.78 mi (665.92 km) |
| Birkenhead to Oegstgeest | 323.39 mi (520.45 km) |
| Birkenhead to Oirschot | 373.48 mi (601.06 km) |
| Birkenhead to Oisterwijk | 367.25 mi (591.04 km) |
| Birkenhead to Oldebroek | 376.74 mi (606.31 km) |
| Birkenhead to Oldenzaal | 421.26 mi (677.95 km) |
| Birkenhead to Ommen | 396.89 mi (638.73 km) |
| Birkenhead to Oosterend | 376.54 mi (605.99 km) |
| Birkenhead to Oosterhout | 352.09 mi (566.64 km) |
| Birkenhead to Oosterwolde | 385.94 mi (621.11 km) |
| Birkenhead to Oostzaan | 335.47 mi (539.89 km) |
| Birkenhead to Opmeer | 334.06 mi (537.62 km) |
| Birkenhead to Oss | 375.10 mi (603.67 km) |
| Birkenhead to Oud-Beijerland | 329.43 mi (530.16 km) |
| Birkenhead to Oudenbosch | 340.52 mi (548.02 km) |
