| Le Grand-Saconnex to Octeville | 428.66 mi (689.86 km) |
| Le Grand-Saconnex to Oignies | 325.84 mi (524.39 km) |
| Le Grand-Saconnex to Oissel | 316.98 mi (510.12 km) |
| Le Grand-Saconnex to Olivet | 228.19 mi (367.23 km) |
| Le Grand-Saconnex to Ollioules | 214.18 mi (344.69 km) |
| Le Grand-Saconnex to Olonne-sur-Mer | 376.45 mi (605.84 km) |
| Le Grand-Saconnex to Oloron-Sainte-Marie | 391.03 mi (629.31 km) |
| Le Grand-Saconnex to Onet Village | 214.37 mi (345.00 km) |
| Le Grand-Saconnex to Onnaing | 309.46 mi (498.02 km) |
| Le Grand-Saconnex to Orange | 158.12 mi (254.47 km) |
| Le Grand-Saconnex to Orchies | 321.30 mi (517.08 km) |
| Le Grand-Saconnex to Orleans | 229.11 mi (368.72 km) |
| Le Grand-Saconnex to Orly | 245.54 mi (395.16 km) |
| Le Grand-Saconnex to Ormesson-sur-Marne | 242.83 mi (390.80 km) |
| Le Grand-Saconnex to Orsay | 250.31 mi (402.83 km) |
