| Vallet to Oria | 1,044.83 mi (1,681.49 km) |
| Vallet to Oristano | 702.63 mi (1,130.78 km) |
| Vallet to Orta Nova | 929.31 mi (1,495.57 km) |
| Vallet to Orte | 742.52 mi (1,194.97 km) |
| Vallet to Ortona | 835.58 mi (1,344.74 km) |
| Vallet to Orvieto | 721.43 mi (1,161.03 km) |
| Vallet to Orzinuovi | 547.99 mi (881.90 km) |
| Vallet to Osimo | 758.89 mi (1,221.32 km) |
| Vallet to Ospitaletto | 551.49 mi (887.55 km) |
| Vallet to Ostuni | 1,034.05 mi (1,664.14 km) |
| Vallet to Ottaviano | 893.41 mi (1,437.80 km) |
| Vallet to Ovada | 507.08 mi (816.07 km) |
| Vallet to Ozieri | 683.18 mi (1,099.47 km) |
| Vallet to Paceco | 944.23 mi (1,519.60 km) |
| Vallet to Pachino | 1,104.33 mi (1,777.24 km) |
