| Ovidiu to Nuth | 1,146.15 mi (1,844.55 km) |
| Ovidiu to Oegstgeest | 1,228.57 mi (1,977.19 km) |
| Ovidiu to Oirschot | 1,181.15 mi (1,900.87 km) |
| Ovidiu to Oisterwijk | 1,186.86 mi (1,910.06 km) |
| Ovidiu to Oldebroek | 1,176.83 mi (1,893.93 km) |
| Ovidiu to Oldenzaal | 1,132.76 mi (1,822.99 km) |
| Ovidiu to Ommen | 1,158.00 mi (1,863.63 km) |
| Ovidiu to Oosterend | 1,183.78 mi (1,905.11 km) |
| Ovidiu to Oosterhout | 1,202.15 mi (1,934.67 km) |
| Ovidiu to Oosterwolde | 1,174.75 mi (1,890.57 km) |
| Ovidiu to Oostzaan | 1,216.97 mi (1,958.53 km) |
| Ovidiu to Opmeer | 1,220.19 mi (1,963.71 km) |
| Ovidiu to Oss | 1,177.44 mi (1,894.91 km) |
| Ovidiu to Oud-Beijerland | 1,224.21 mi (1,970.18 km) |
| Ovidiu to Oudenbosch | 1,214.93 mi (1,955.24 km) |
