| Naples to Olivenza | 1,140.82 mi (1,835.97 km) |
| Naples to Olot | 615.12 mi (989.94 km) |
| Naples to Onate | 868.54 mi (1,397.78 km) |
| Naples to Onda | 765.19 mi (1,231.45 km) |
| Naples to Onteniente | 799.48 mi (1,286.64 km) |
| Naples to Orihuela | 831.45 mi (1,338.08 km) |
| Naples to Osuna | 1,065.48 mi (1,714.73 km) |
| Naples to Ourense | 1,144.28 mi (1,841.54 km) |
| Naples to Oviedo | 1,042.28 mi (1,677.39 km) |
| Naples to Paiporta | 780.01 mi (1,255.31 km) |
| Naples to Pajara | 1,817.06 mi (2,924.28 km) |
| Naples to Palafolls | 599.68 mi (965.10 km) |
| Naples to Palafrugell | 579.27 mi (932.24 km) |
| Naples to Palamos | 580.72 mi (934.59 km) |
| Naples to Palencia | 974.58 mi (1,568.43 km) |
