| Ferentino to Olivenza | 1,091.30 mi (1,756.28 km) |
| Ferentino to Olot | 553.83 mi (891.30 km) |
| Ferentino to Onate | 804.11 mi (1,294.09 km) |
| Ferentino to Onda | 715.73 mi (1,151.86 km) |
| Ferentino to Onteniente | 756.04 mi (1,216.72 km) |
| Ferentino to Orihuela | 791.56 mi (1,273.89 km) |
| Ferentino to Osuna | 1,023.72 mi (1,647.51 km) |
| Ferentino to Ourense | 1,082.08 mi (1,741.44 km) |
| Ferentino to Oviedo | 977.08 mi (1,572.46 km) |
| Ferentino to Paiporta | 733.40 mi (1,180.30 km) |
| Ferentino to Pajara | 1,789.37 mi (2,879.71 km) |
| Ferentino to Palafolls | 541.50 mi (871.47 km) |
| Ferentino to Palafrugell | 519.50 mi (836.05 km) |
| Ferentino to Palamos | 521.42 mi (839.14 km) |
| Ferentino to Palencia | 913.90 mi (1,470.78 km) |
