| Castellaneta to Olivenza | 1,281.45 mi (2,062.30 km) |
| Castellaneta to Olot | 755.20 mi (1,215.38 km) |
| Castellaneta to Onate | 1,007.52 mi (1,621.45 km) |
| Castellaneta to Onda | 905.98 mi (1,458.03 km) |
| Castellaneta to Onteniente | 938.85 mi (1,510.93 km) |
| Castellaneta to Orihuela | 969.50 mi (1,560.26 km) |
| Castellaneta to Osuna | 1,203.93 mi (1,937.53 km) |
| Castellaneta to Ourense | 1,284.28 mi (2,066.84 km) |
| Castellaneta to Oviedo | 1,180.91 mi (1,900.50 km) |
| Castellaneta to Paiporta | 920.25 mi (1,481.00 km) |
| Castellaneta to Pajara | 1,946.67 mi (3,132.87 km) |
| Castellaneta to Palafolls | 740.48 mi (1,191.68 km) |
| Castellaneta to Palafrugell | 719.73 mi (1,158.30 km) |
| Castellaneta to Palamos | 721.29 mi (1,160.81 km) |
| Castellaneta to Palencia | 1,115.00 mi (1,794.42 km) |
