| Ploiesti to Olivenza | 1,746.42 mi (2,810.60 km) |
| Ploiesti to Olot | 1,189.25 mi (1,913.91 km) |
| Ploiesti to Onate | 1,412.61 mi (2,273.38 km) |
| Ploiesti to Onda | 1,376.85 mi (2,215.83 km) |
| Ploiesti to Onteniente | 1,426.19 mi (2,295.24 km) |
| Ploiesti to Orihuela | 1,465.45 mi (2,358.42 km) |
| Ploiesti to Osuna | 1,693.86 mi (2,726.01 km) |
| Ploiesti to Ourense | 1,691.50 mi (2,722.20 km) |
| Ploiesti to Oviedo | 1,573.42 mi (2,532.18 km) |
| Ploiesti to Paiporta | 1,399.25 mi (2,251.88 km) |
| Ploiesti to Pajara | 2,468.76 mi (3,973.08 km) |
| Ploiesti to Palafolls | 1,187.43 mi (1,910.99 km) |
| Ploiesti to Palafrugell | 1,161.84 mi (1,869.81 km) |
| Ploiesti to Palamos | 1,165.06 mi (1,874.98 km) |
| Ploiesti to Palencia | 1,535.97 mi (2,471.90 km) |
