| Ploiesti to Nuth | 1,015.45 mi (1,634.21 km) |
| Ploiesti to Oegstgeest | 1,099.64 mi (1,769.70 km) |
| Ploiesti to Oirschot | 1,051.25 mi (1,691.83 km) |
| Ploiesti to Oisterwijk | 1,057.08 mi (1,701.20 km) |
| Ploiesti to Oldebroek | 1,049.08 mi (1,688.32 km) |
| Ploiesti to Oldenzaal | 1,005.25 mi (1,617.80 km) |
| Ploiesti to Ommen | 1,030.67 mi (1,658.71 km) |
| Ploiesti to Oosterend | 1,057.40 mi (1,701.72 km) |
| Ploiesti to Oosterhout | 1,072.36 mi (1,725.80 km) |
| Ploiesti to Oosterwolde | 1,048.47 mi (1,687.36 km) |
| Ploiesti to Oostzaan | 1,088.70 mi (1,752.10 km) |
| Ploiesti to Opmeer | 1,092.51 mi (1,758.23 km) |
| Ploiesti to Oss | 1,048.11 mi (1,686.77 km) |
| Ploiesti to Oud-Beijerland | 1,094.58 mi (1,761.56 km) |
| Ploiesti to Oudenbosch | 1,084.95 mi (1,746.05 km) |
