| Grenoble to Oignies | 387.24 mi (623.20 km) |
| Grenoble to Oissel | 360.67 mi (580.44 km) |
| Grenoble to Olivet | 259.98 mi (418.40 km) |
| Grenoble to Ollioules | 140.54 mi (226.18 km) |
| Grenoble to Olonne-sur-Mer | 372.65 mi (599.72 km) |
| Grenoble to Oloron-Sainte-Marie | 341.94 mi (550.29 km) |
| Grenoble to Onet Village | 163.25 mi (262.73 km) |
| Grenoble to Onnaing | 373.62 mi (601.28 km) |
| Grenoble to Orange | 84.31 mi (135.68 km) |
| Grenoble to Orchies | 383.97 mi (617.94 km) |
| Grenoble to Orleans | 261.58 mi (420.96 km) |
| Grenoble to Orly | 292.47 mi (470.69 km) |
| Grenoble to Ormesson-sur-Marne | 291.30 mi (468.80 km) |
| Grenoble to Orsay | 295.20 mi (475.08 km) |
| Grenoble to Orthez | 341.23 mi (549.16 km) |
