| Oskaloosa to Orbetello | 4,960.03 mi (7,982.39 km) |
| Oskaloosa to Oria | 5,297.22 mi (8,525.05 km) |
| Oskaloosa to Oristano | 4,966.14 mi (7,992.22 km) |
| Oskaloosa to Orta Nova | 5,184.69 mi (8,343.95 km) |
| Oskaloosa to Orte | 5,004.84 mi (8,054.51 km) |
| Oskaloosa to Ortona | 5,087.41 mi (8,187.39 km) |
| Oskaloosa to Orvieto | 4,982.61 mi (8,018.73 km) |
| Oskaloosa to Orzinuovi | 4,781.64 mi (7,695.30 km) |
| Oskaloosa to Osimo | 5,000.96 mi (8,048.26 km) |
| Oskaloosa to Ospitaletto | 4,780.30 mi (7,693.15 km) |
| Oskaloosa to Ostuni | 5,284.21 mi (8,504.11 km) |
| Oskaloosa to Ottaviano | 5,159.34 mi (8,303.16 km) |
| Oskaloosa to Ovada | 4,764.61 mi (7,667.90 km) |
| Oskaloosa to Ozieri | 4,953.33 mi (7,971.62 km) |
| Oskaloosa to Paceco | 5,214.22 mi (8,391.48 km) |
