| Oildale to Orbetello | 6,207.70 mi (9,990.33 km) |
| Oildale to Oria | 6,512.32 mi (10,480.57 km) |
| Oildale to Oristano | 6,256.70 mi (10,069.19 km) |
| Oildale to Orta Nova | 6,407.96 mi (10,312.61 km) |
| Oildale to Orte | 6,243.45 mi (10,047.87 km) |
| Oildale to Ortona | 6,311.35 mi (10,157.13 km) |
| Oildale to Orvieto | 6,220.77 mi (10,011.36 km) |
| Oildale to Orzinuovi | 6,008.55 mi (9,669.83 km) |
| Oildale to Osimo | 6,220.83 mi (10,011.45 km) |
| Oildale to Ospitaletto | 6,004.55 mi (9,663.39 km) |
| Oildale to Ostuni | 6,497.51 mi (10,456.73 km) |
| Oildale to Ottaviano | 6,397.26 mi (10,295.40 km) |
| Oildale to Ovada | 6,008.70 mi (9,670.07 km) |
| Oildale to Ozieri | 6,234.76 mi (10,033.88 km) |
| Oildale to Paceco | 6,493.65 mi (10,450.52 km) |
