| Onex to Octeville | 430.05 mi (692.10 km) |
| Onex to Oignies | 328.65 mi (528.90 km) |
| Onex to Oissel | 318.84 mi (513.12 km) |
| Onex to Olivet | 229.31 mi (369.04 km) |
| Onex to Ollioules | 210.68 mi (339.06 km) |
| Onex to Olonne-sur-Mer | 376.03 mi (605.17 km) |
| Onex to Oloron-Sainte-Marie | 388.62 mi (625.42 km) |
| Onex to Onet Village | 211.72 mi (340.73 km) |
| Onex to Onnaing | 312.40 mi (502.76 km) |
| Onex to Orange | 154.64 mi (248.87 km) |
| Onex to Orchies | 324.17 mi (521.70 km) |
| Onex to Orleans | 230.27 mi (370.59 km) |
| Onex to Orly | 247.51 mi (398.32 km) |
| Onex to Ormesson-sur-Marne | 244.88 mi (394.09 km) |
| Onex to Orsay | 252.17 mi (405.83 km) |
