| Biarritz to Oignies | 528.22 mi (850.09 km) |
| Biarritz to Oissel | 424.18 mi (682.66 km) |
| Biarritz to Olivet | 345.83 mi (556.57 km) |
| Biarritz to Ollioules | 373.01 mi (600.30 km) |
| Biarritz to Olonne-sur-Mer | 211.41 mi (340.23 km) |
| Biarritz to Oloron-Sainte-Marie | 51.82 mi (83.39 km) |
| Biarritz to Onet Village | 215.55 mi (346.89 km) |
| Biarritz to Onnaing | 535.43 mi (861.69 km) |
| Biarritz to Orange | 320.76 mi (516.21 km) |
| Biarritz to Orchies | 533.44 mi (858.49 km) |
| Biarritz to Orleans | 348.34 mi (560.60 km) |
| Biarritz to Orly | 409.89 mi (659.66 km) |
| Biarritz to Ormesson-sur-Marne | 415.66 mi (668.94 km) |
| Biarritz to Orsay | 402.66 mi (648.01 km) |
| Biarritz to Orthez | 39.57 mi (63.68 km) |
