| Vail to Orbetello | 6,111.07 mi (9,834.82 km) |
| Vail to Oria | 6,438.03 mi (10,361.01 km) |
| Vail to Oristano | 6,131.21 mi (9,867.23 km) |
| Vail to Orta Nova | 6,327.97 mi (10,183.89 km) |
| Vail to Orte | 6,152.86 mi (9,902.07 km) |
| Vail to Ortona | 6,230.43 mi (10,026.91 km) |
| Vail to Orvieto | 6,130.35 mi (9,865.85 km) |
| Vail to Orzinuovi | 5,924.14 mi (9,533.99 km) |
| Vail to Osimo | 6,141.97 mi (9,884.54 km) |
| Vail to Ospitaletto | 5,921.78 mi (9,530.18 km) |
| Vail to Ostuni | 6,424.26 mi (10,338.85 km) |
| Vail to Ottaviano | 6,307.88 mi (10,151.55 km) |
| Vail to Ovada | 5,913.41 mi (9,516.72 km) |
| Vail to Ozieri | 6,115.58 mi (9,842.08 km) |
| Vail to Paceco | 6,376.86 mi (10,262.56 km) |
