| Cassino to Olivenza | 1,120.58 mi (1,803.40 km) |
| Cassino to Olot | 585.40 mi (942.12 km) |
| Cassino to Onate | 836.26 mi (1,345.83 km) |
| Cassino to Onda | 744.84 mi (1,198.71 km) |
| Cassino to Onteniente | 783.60 mi (1,261.09 km) |
| Cassino to Orihuela | 818.16 mi (1,316.70 km) |
| Cassino to Osuna | 1,050.97 mi (1,691.37 km) |
| Cassino to Ourense | 1,113.94 mi (1,792.72 km) |
| Cassino to Oviedo | 1,009.35 mi (1,624.40 km) |
| Cassino to Paiporta | 761.80 mi (1,225.99 km) |
| Cassino to Pajara | 1,812.69 mi (2,917.25 km) |
| Cassino to Palafolls | 572.48 mi (921.32 km) |
| Cassino to Palafrugell | 550.78 mi (886.39 km) |
| Cassino to Palamos | 552.61 mi (889.33 km) |
| Cassino to Palencia | 945.49 mi (1,521.61 km) |
