| Nieuwpoort to Olivenza | 982.95 mi (1,581.91 km) |
| Nieuwpoort to Olot | 617.44 mi (993.67 km) |
| Nieuwpoort to Onate | 608.75 mi (979.69 km) |
| Nieuwpoort to Onda | 784.18 mi (1,262.02 km) |
| Nieuwpoort to Onteniente | 864.93 mi (1,391.97 km) |
| Nieuwpoort to Orihuela | 918.24 mi (1,477.76 km) |
| Nieuwpoort to Osuna | 1,033.69 mi (1,663.57 km) |
| Nieuwpoort to Ourense | 786.23 mi (1,265.32 km) |
| Nieuwpoort to Oviedo | 669.71 mi (1,077.79 km) |
| Nieuwpoort to Paiporta | 821.98 mi (1,322.85 km) |
| Nieuwpoort to Pajara | 1,800.25 mi (2,897.23 km) |
| Nieuwpoort to Palafolls | 652.76 mi (1,050.51 km) |
| Nieuwpoort to Palafrugell | 635.91 mi (1,023.40 km) |
| Nieuwpoort to Palamos | 640.81 mi (1,031.28 km) |
| Nieuwpoort to Palencia | 716.83 mi (1,153.62 km) |
