| Ploiesti to Octeville | 1,328.26 mi (2,137.63 km) |
| Ploiesti to Oignies | 1,131.29 mi (1,820.63 km) |
| Ploiesti to Oissel | 1,204.39 mi (1,938.28 km) |
| Ploiesti to Olivet | 1,161.97 mi (1,870.01 km) |
| Ploiesti to Ollioules | 1,007.13 mi (1,620.82 km) |
| Ploiesti to Olonne-sur-Mer | 1,337.92 mi (2,153.17 km) |
| Ploiesti to Oloron-Sainte-Marie | 1,321.52 mi (2,126.78 km) |
| Ploiesti to Onet Village | 1,148.23 mi (1,847.90 km) |
| Ploiesti to Onnaing | 1,104.10 mi (1,776.87 km) |
| Ploiesti to Orange | 1,043.16 mi (1,678.81 km) |
| Ploiesti to Orchies | 1,120.54 mi (1,803.34 km) |
| Ploiesti to Orleans | 1,161.63 mi (1,869.47 km) |
| Ploiesti to Orly | 1,142.23 mi (1,838.24 km) |
| Ploiesti to Ormesson-sur-Marne | 1,135.85 mi (1,827.98 km) |
| Ploiesti to Orsay | 1,151.33 mi (1,852.89 km) |
