| Chickasha to Orbetello | 5,465.10 mi (8,795.23 km) |
| Chickasha to Oria | 5,805.66 mi (9,343.31 km) |
| Chickasha to Oristano | 5,463.44 mi (8,792.56 km) |
| Chickasha to Orta Nova | 5,692.45 mi (9,161.12 km) |
| Chickasha to Orte | 5,511.11 mi (8,869.27 km) |
| Chickasha to Ortona | 5,595.41 mi (9,004.94 km) |
| Chickasha to Orvieto | 5,489.02 mi (8,833.72 km) |
| Chickasha to Orzinuovi | 5,290.27 mi (8,513.86 km) |
| Chickasha to Osimo | 5,509.76 mi (8,867.10 km) |
| Chickasha to Ospitaletto | 5,289.27 mi (8,512.26 km) |
| Chickasha to Ostuni | 5,792.92 mi (9,322.80 km) |
| Chickasha to Ottaviano | 5,665.16 mi (9,117.20 km) |
| Chickasha to Ovada | 5,270.94 mi (8,482.75 km) |
| Chickasha to Ozieri | 5,452.55 mi (8,775.03 km) |
| Chickasha to Paceco | 5,712.73 mi (9,193.75 km) |
