| Oroville to Orbetello | 6,050.11 mi (9,736.71 km) |
| Oroville to Oria | 6,341.32 mi (10,205.36 km) |
| Oroville to Oristano | 6,114.03 mi (9,839.58 km) |
| Oroville to Orta Nova | 6,240.50 mi (10,043.12 km) |
| Oroville to Orte | 6,082.51 mi (9,788.85 km) |
| Oroville to Ortona | 6,145.01 mi (9,889.44 km) |
| Oroville to Orvieto | 6,059.89 mi (9,752.45 km) |
| Oroville to Orzinuovi | 5,846.04 mi (9,408.30 km) |
| Oroville to Osimo | 6,054.06 mi (9,743.07 km) |
| Oroville to Ospitaletto | 5,841.24 mi (9,400.56 km) |
| Oroville to Ostuni | 6,326.08 mi (10,180.84 km) |
| Oroville to Ottaviano | 6,234.65 mi (10,033.70 km) |
| Oroville to Ovada | 5,851.79 mi (9,417.54 km) |
| Oroville to Ozieri | 6,088.86 mi (9,799.07 km) |
| Oroville to Paceco | 6,344.65 mi (10,210.72 km) |
