| Oosterend to Olivenza | 1,170.72 mi (1,884.10 km) |
| Oosterend to Olot | 765.79 mi (1,232.42 km) |
| Oosterend to Onate | 791.38 mi (1,273.60 km) |
| Oosterend to Onda | 949.13 mi (1,527.48 km) |
| Oosterend to Onteniente | 1,029.92 mi (1,657.49 km) |
| Oosterend to Orihuela | 1,083.89 mi (1,744.36 km) |
| Oosterend to Osuna | 1,214.76 mi (1,954.96 km) |
| Oosterend to Ourense | 978.02 mi (1,573.97 km) |
| Oosterend to Oviedo | 860.88 mi (1,385.45 km) |
| Oosterend to Paiporta | 986.90 mi (1,588.27 km) |
| Oosterend to Pajara | 1,989.29 mi (3,201.45 km) |
| Oosterend to Palafolls | 798.15 mi (1,284.49 km) |
| Oosterend to Palafrugell | 777.73 mi (1,251.63 km) |
| Oosterend to Palamos | 782.89 mi (1,259.94 km) |
| Oosterend to Palencia | 903.97 mi (1,454.80 km) |
