| Frederikssund to Olivenza | 1,476.52 mi (2,376.24 km) |
| Frederikssund to Olot | 1,036.03 mi (1,667.32 km) |
| Frederikssund to Onate | 1,093.34 mi (1,759.55 km) |
| Frederikssund to Onda | 1,232.17 mi (1,982.98 km) |
| Frederikssund to Onteniente | 1,311.94 mi (2,111.36 km) |
| Frederikssund to Orihuela | 1,366.01 mi (2,198.37 km) |
| Frederikssund to Osuna | 1,513.01 mi (2,434.96 km) |
| Frederikssund to Ourense | 1,288.21 mi (2,073.18 km) |
| Frederikssund to Oviedo | 1,170.49 mi (1,883.73 km) |
| Frederikssund to Paiporta | 1,269.40 mi (2,042.90 km) |
| Frederikssund to Pajara | 2,295.86 mi (3,694.83 km) |
| Frederikssund to Palafolls | 1,064.48 mi (1,713.11 km) |
| Frederikssund to Palafrugell | 1,041.15 mi (1,675.57 km) |
| Frederikssund to Palamos | 1,046.40 mi (1,684.02 km) |
| Frederikssund to Palencia | 1,209.68 mi (1,946.78 km) |
