| Bucharest to Olivenza | 1,749.18 mi (2,815.03 km) |
| Bucharest to Olot | 1,193.22 mi (1,920.30 km) |
| Bucharest to Onate | 1,419.94 mi (2,285.17 km) |
| Bucharest to Onda | 1,378.11 mi (2,217.86 km) |
| Bucharest to Onteniente | 1,425.79 mi (2,294.58 km) |
| Bucharest to Orihuela | 1,464.10 mi (2,356.25 km) |
| Bucharest to Osuna | 1,693.69 mi (2,725.73 km) |
| Bucharest to Ourense | 1,699.49 mi (2,735.06 km) |
| Bucharest to Oviedo | 1,582.28 mi (2,546.44 km) |
| Bucharest to Paiporta | 1,399.71 mi (2,252.62 km) |
| Bucharest to Pajara | 2,464.50 mi (3,966.22 km) |
| Bucharest to Palafolls | 1,190.27 mi (1,915.55 km) |
| Bucharest to Palafrugell | 1,164.98 mi (1,874.86 km) |
| Bucharest to Palamos | 1,168.07 mi (1,879.83 km) |
| Bucharest to Palencia | 1,542.38 mi (2,482.22 km) |
