| Olonne-sur-Mer to Octeville | 213.64 mi (343.82 km) |
| Olonne-sur-Mer to Oignies | 348.36 mi (560.64 km) |
| Olonne-sur-Mer to Oissel | 234.82 mi (377.91 km) |
| Olonne-sur-Mer to Olivet | 195.30 mi (314.31 km) |
| Olonne-sur-Mer to Ollioules | 440.66 mi (709.18 km) |
| Olonne-sur-Mer to Oloron-Sainte-Marie | 237.85 mi (382.79 km) |
| Olonne-sur-Mer to Onet Village | 259.32 mi (417.34 km) |
| Olonne-sur-Mer to Onnaing | 362.27 mi (583.03 km) |
| Olonne-sur-Mer to Orange | 359.91 mi (579.22 km) |
| Olonne-sur-Mer to Orchies | 355.93 mi (572.81 km) |
| Olonne-sur-Mer to Orleans | 196.86 mi (316.81 km) |
| Olonne-sur-Mer to Orly | 246.67 mi (396.98 km) |
| Olonne-sur-Mer to Ormesson-sur-Marne | 253.72 mi (408.33 km) |
| Olonne-sur-Mer to Orsay | 237.30 mi (381.89 km) |
| Olonne-sur-Mer to Orthez | 216.20 mi (347.95 km) |
