| Tortum to Orbetello | 1,575.80 mi (2,536.00 km) |
| Tortum to Oria | 1,258.95 mi (2,026.08 km) |
| Tortum to Oristano | 1,736.17 mi (2,794.10 km) |
| Tortum to Orta Nova | 1,352.30 mi (2,176.31 km) |
| Tortum to Orte | 1,516.05 mi (2,439.84 km) |
| Tortum to Ortona | 1,414.05 mi (2,275.70 km) |
| Tortum to Orvieto | 1,528.78 mi (2,460.34 km) |
| Tortum to Orzinuovi | 1,632.73 mi (2,627.62 km) |
| Tortum to Osimo | 1,457.34 mi (2,345.36 km) |
| Tortum to Ospitaletto | 1,626.20 mi (2,617.12 km) |
| Tortum to Ostuni | 1,259.62 mi (2,027.17 km) |
| Tortum to Ottaviano | 1,419.90 mi (2,285.11 km) |
| Tortum to Ovada | 1,695.74 mi (2,729.04 km) |
| Tortum to Ozieri | 1,705.98 mi (2,745.51 km) |
| Tortum to Paceco | 1,559.63 mi (2,509.99 km) |
