| Dax to Oignies | 504.07 mi (811.23 km) |
| Dax to Oissel | 402.18 mi (647.24 km) |
| Dax to Olivet | 320.22 mi (515.35 km) |
| Dax to Ollioules | 348.23 mi (560.42 km) |
| Dax to Olonne-sur-Mer | 198.42 mi (319.32 km) |
| Dax to Oloron-Sainte-Marie | 42.01 mi (67.60 km) |
| Dax to Onet Village | 186.54 mi (300.21 km) |
| Dax to Onnaing | 510.40 mi (821.41 km) |
| Dax to Orange | 293.04 mi (471.61 km) |
| Dax to Orchies | 508.96 mi (819.09 km) |
| Dax to Orleans | 322.77 mi (519.45 km) |
| Dax to Orly | 384.67 mi (619.07 km) |
| Dax to Ormesson-sur-Marne | 390.26 mi (628.06 km) |
| Dax to Orsay | 377.73 mi (607.90 km) |
| Dax to Orthez | 20.74 mi (33.38 km) |
