| Conflans-Sainte-Honorine to Oignies | 109.15 mi (175.66 km) |
| Conflans-Sainte-Honorine to Oissel | 51.28 mi (82.53 km) |
| Conflans-Sainte-Honorine to Olivet | 78.96 mi (127.08 km) |
| Conflans-Sainte-Honorine to Ollioules | 442.82 mi (712.64 km) |
| Conflans-Sainte-Honorine to Olonne-sur-Mer | 247.49 mi (398.30 km) |
| Conflans-Sainte-Honorine to Oloron-Sainte-Marie | 421.43 mi (678.23 km) |
| Conflans-Sainte-Honorine to Onet Village | 321.01 mi (516.61 km) |
| Conflans-Sainte-Honorine to Onnaing | 117.04 mi (188.35 km) |
| Conflans-Sainte-Honorine to Orange | 359.64 mi (578.79 km) |
| Conflans-Sainte-Honorine to Orchies | 114.06 mi (183.57 km) |
| Conflans-Sainte-Honorine to Orleans | 76.27 mi (122.74 km) |
| Conflans-Sainte-Honorine to Orly | 22.14 mi (35.63 km) |
| Conflans-Sainte-Honorine to Ormesson-sur-Marne | 24.84 mi (39.97 km) |
| Conflans-Sainte-Honorine to Orsay | 21.20 mi (34.11 km) |
| Conflans-Sainte-Honorine to Orthez | 404.63 mi (651.19 km) |
