| Gent to Oignies | 51.51 mi (82.89 km) |
| Gent to Oissel | 165.99 mi (267.13 km) |
| Gent to Olivet | 235.11 mi (378.37 km) |
| Gent to Ollioules | 555.79 mi (894.45 km) |
| Gent to Olonne-sur-Mer | 399.83 mi (643.46 km) |
| Gent to Oloron-Sainte-Marie | 579.70 mi (932.94 km) |
| Gent to Onet Village | 465.07 mi (748.45 km) |
| Gent to Onnaing | 46.34 mi (74.57 km) |
| Gent to Orange | 480.45 mi (773.21 km) |
| Gent to Orchies | 45.19 mi (72.72 km) |
| Gent to Orleans | 232.47 mi (374.12 km) |
| Gent to Orly | 170.24 mi (273.97 km) |
| Gent to Ormesson-sur-Marne | 165.34 mi (266.09 km) |
| Gent to Orsay | 176.56 mi (284.14 km) |
| Gent to Orthez | 563.35 mi (906.63 km) |
