| Altus to Orbetello | 5,538.29 mi (8,913.01 km) |
| Altus to Oria | 5,877.78 mi (9,459.38 km) |
| Altus to Oristano | 5,538.55 mi (8,913.43 km) |
| Altus to Orta Nova | 5,764.80 mi (9,277.56 km) |
| Altus to Orte | 5,583.94 mi (8,986.48 km) |
| Altus to Ortona | 5,667.67 mi (9,121.23 km) |
| Altus to Orvieto | 5,561.80 mi (8,950.85 km) |
| Altus to Orzinuovi | 5,362.28 mi (8,629.76 km) |
| Altus to Osimo | 5,581.73 mi (8,982.93 km) |
| Altus to Ospitaletto | 5,361.16 mi (8,627.95 km) |
| Altus to Ostuni | 5,864.95 mi (9,438.72 km) |
| Altus to Ottaviano | 5,738.14 mi (9,234.65 km) |
| Altus to Ovada | 5,343.72 mi (8,599.89 km) |
| Altus to Ozieri | 5,527.24 mi (8,895.23 km) |
| Altus to Paceco | 5,787.61 mi (9,314.26 km) |
