| Beykoz to Octeville | 1,589.13 mi (2,557.46 km) |
| Beykoz to Oignies | 1,402.72 mi (2,257.46 km) |
| Beykoz to Oissel | 1,464.89 mi (2,357.52 km) |
| Beykoz to Olivet | 1,409.68 mi (2,268.66 km) |
| Beykoz to Ollioules | 1,195.13 mi (1,923.38 km) |
| Beykoz to Olonne-sur-Mer | 1,572.05 mi (2,529.96 km) |
| Beykoz to Oloron-Sainte-Marie | 1,519.61 mi (2,445.57 km) |
| Beykoz to Onet Village | 1,356.74 mi (2,183.46 km) |
| Beykoz to Onnaing | 1,375.66 mi (2,213.91 km) |
| Beykoz to Orange | 1,246.89 mi (2,006.68 km) |
| Beykoz to Orchies | 1,392.32 mi (2,240.73 km) |
| Beykoz to Orleans | 1,409.72 mi (2,268.73 km) |
| Beykoz to Orly | 1,398.61 mi (2,250.85 km) |
| Beykoz to Ormesson-sur-Marne | 1,392.75 mi (2,241.41 km) |
| Beykoz to Orsay | 1,407.12 mi (2,264.55 km) |
