| Fleron to Oignies | 118.53 mi (190.76 km) |
| Fleron to Oissel | 222.18 mi (357.56 km) |
| Fleron to Olivet | 255.46 mi (411.12 km) |
| Fleron to Ollioules | 516.69 mi (831.53 km) |
| Fleron to Olonne-sur-Mer | 441.97 mi (711.28 km) |
| Fleron to Oloron-Sainte-Marie | 592.10 mi (952.89 km) |
| Fleron to Onet Village | 455.25 mi (732.66 km) |
| Fleron to Onnaing | 92.99 mi (149.65 km) |
| Fleron to Orange | 449.47 mi (723.35 km) |
| Fleron to Orchies | 107.54 mi (173.06 km) |
| Fleron to Orleans | 253.18 mi (407.46 km) |
| Fleron to Orly | 195.89 mi (315.25 km) |
| Fleron to Ormesson-sur-Marne | 189.06 mi (304.26 km) |
| Fleron to Orsay | 204.95 mi (329.84 km) |
| Fleron to Orthez | 578.21 mi (930.53 km) |
