| Gebze to Octeville | 1,616.52 mi (2,601.54 km) |
| Gebze to Oignies | 1,430.76 mi (2,302.58 km) |
| Gebze to Oissel | 1,492.31 mi (2,401.65 km) |
| Gebze to Olivet | 1,436.39 mi (2,311.65 km) |
| Gebze to Ollioules | 1,218.27 mi (1,960.62 km) |
| Gebze to Olonne-sur-Mer | 1,597.81 mi (2,571.43 km) |
| Gebze to Oloron-Sainte-Marie | 1,543.00 mi (2,483.22 km) |
| Gebze to Onet Village | 1,381.02 mi (2,222.54 km) |
| Gebze to Onnaing | 1,403.71 mi (2,259.05 km) |
| Gebze to Orange | 1,271.00 mi (2,045.48 km) |
| Gebze to Orchies | 1,420.38 mi (2,285.88 km) |
| Gebze to Orleans | 1,436.46 mi (2,311.76 km) |
| Gebze to Orly | 1,425.84 mi (2,294.66 km) |
| Gebze to Ormesson-sur-Marne | 1,420.00 mi (2,285.27 km) |
| Gebze to Orsay | 1,434.31 mi (2,308.29 km) |
