| Bartlesville to Orbetello | 5,303.10 mi (8,534.52 km) |
| Bartlesville to Oria | 5,643.56 mi (9,082.43 km) |
| Bartlesville to Oristano | 5,302.05 mi (8,532.82 km) |
| Bartlesville to Orta Nova | 5,530.36 mi (8,900.26 km) |
| Bartlesville to Orte | 5,349.06 mi (8,608.48 km) |
| Bartlesville to Ortona | 5,433.31 mi (8,744.07 km) |
| Bartlesville to Orvieto | 5,326.97 mi (8,572.92 km) |
| Bartlesville to Orzinuovi | 5,128.16 mi (8,252.98 km) |
| Bartlesville to Osimo | 5,347.66 mi (8,606.22 km) |
| Bartlesville to Ospitaletto | 5,127.17 mi (8,251.38 km) |
| Bartlesville to Ostuni | 5,630.82 mi (9,061.92 km) |
| Bartlesville to Ottaviano | 5,503.13 mi (8,856.44 km) |
| Bartlesville to Ovada | 5,108.88 mi (8,221.95 km) |
| Bartlesville to Ozieri | 5,290.97 mi (8,514.99 km) |
| Bartlesville to Paceco | 5,551.23 mi (8,933.85 km) |
