| Ovar to Nuth | 981.29 mi (1,579.23 km) |
| Ovar to Oegstgeest | 996.41 mi (1,603.56 km) |
| Ovar to Oirschot | 988.66 mi (1,591.09 km) |
| Ovar to Oisterwijk | 989.41 mi (1,592.31 km) |
| Ovar to Oldebroek | 1,052.18 mi (1,693.32 km) |
| Ovar to Oldenzaal | 1,078.17 mi (1,735.14 km) |
| Ovar to Ommen | 1,071.18 mi (1,723.90 km) |
| Ovar to Oosterend | 1,083.87 mi (1,744.32 km) |
| Ovar to Oosterhout | 981.59 mi (1,579.71 km) |
| Ovar to Oosterwolde | 1,089.90 mi (1,754.02 km) |
| Ovar to Oostzaan | 1,021.05 mi (1,643.23 km) |
| Ovar to Opmeer | 1,036.33 mi (1,667.81 km) |
| Ovar to Oss | 1,007.98 mi (1,622.19 km) |
| Ovar to Oud-Beijerland | 976.19 mi (1,571.02 km) |
| Ovar to Oudenbosch | 968.77 mi (1,559.09 km) |
