| Skien to Olivenza | 1,596.53 mi (2,569.36 km) |
| Skien to Olot | 1,214.70 mi (1,954.87 km) |
| Skien to Onate | 1,227.90 mi (1,976.11 km) |
| Skien to Onda | 1,397.10 mi (2,248.42 km) |
| Skien to Onteniente | 1,477.97 mi (2,378.56 km) |
| Skien to Orihuela | 1,531.83 mi (2,465.24 km) |
| Skien to Osuna | 1,652.91 mi (2,660.10 km) |
| Skien to Ourense | 1,382.83 mi (2,225.45 km) |
| Skien to Oviedo | 1,274.41 mi (2,050.96 km) |
| Skien to Paiporta | 1,434.92 mi (2,309.29 km) |
| Skien to Pajara | 2,408.30 mi (3,875.78 km) |
| Skien to Palafolls | 1,246.70 mi (2,006.36 km) |
| Skien to Palafrugell | 1,225.80 mi (1,972.73 km) |
| Skien to Palamos | 1,230.99 mi (1,981.08 km) |
| Skien to Palencia | 1,332.47 mi (2,144.41 km) |
