| Postojna to Olivenza | 1,190.61 mi (1,916.10 km) |
| Postojna to Olot | 632.83 mi (1,018.45 km) |
| Postojna to Onate | 840.81 mi (1,353.15 km) |
| Postojna to Onda | 834.17 mi (1,342.47 km) |
| Postojna to Onteniente | 894.76 mi (1,439.98 km) |
| Postojna to Orihuela | 940.70 mi (1,513.91 km) |
| Postojna to Osuna | 1,156.18 mi (1,860.69 km) |
| Postojna to Ourense | 1,117.85 mi (1,799.00 km) |
| Postojna to Oviedo | 998.62 mi (1,607.13 km) |
| Postojna to Paiporta | 861.83 mi (1,386.99 km) |
| Postojna to Pajara | 1,953.73 mi (3,144.22 km) |
| Postojna to Palafolls | 638.04 mi (1,026.83 km) |
| Postojna to Palafrugell | 611.07 mi (983.42 km) |
| Postojna to Palamos | 615.05 mi (989.83 km) |
| Postojna to Palencia | 966.30 mi (1,555.11 km) |
