| Tirebolu to Orbetello | 1,420.70 mi (2,286.40 km) |
| Tirebolu to Oria | 1,106.58 mi (1,780.87 km) |
| Tirebolu to Oristano | 1,582.92 mi (2,547.46 km) |
| Tirebolu to Orta Nova | 1,198.40 mi (1,928.64 km) |
| Tirebolu to Orte | 1,360.98 mi (2,190.28 km) |
| Tirebolu to Ortona | 1,259.11 mi (2,026.35 km) |
| Tirebolu to Orvieto | 1,373.58 mi (2,210.56 km) |
| Tirebolu to Orzinuovi | 1,477.62 mi (2,378.00 km) |
| Tirebolu to Osimo | 1,301.90 mi (2,095.21 km) |
| Tirebolu to Ospitaletto | 1,471.17 mi (2,367.63 km) |
| Tirebolu to Ostuni | 1,106.83 mi (1,781.28 km) |
| Tirebolu to Ottaviano | 1,266.47 mi (2,038.19 km) |
| Tirebolu to Ovada | 1,540.36 mi (2,478.97 km) |
| Tirebolu to Ozieri | 1,552.09 mi (2,497.85 km) |
| Tirebolu to Paceco | 1,410.53 mi (2,270.02 km) |
