| Bertrix to Oignies | 108.67 mi (174.88 km) |
| Bertrix to Oissel | 189.69 mi (305.27 km) |
| Bertrix to Olivet | 205.24 mi (330.30 km) |
| Bertrix to Ollioules | 464.80 mi (748.03 km) |
| Bertrix to Olonne-sur-Mer | 396.32 mi (637.81 km) |
| Bertrix to Oloron-Sainte-Marie | 537.53 mi (865.08 km) |
| Bertrix to Onet Village | 399.25 mi (642.53 km) |
| Bertrix to Onnaing | 82.07 mi (132.08 km) |
| Bertrix to Orange | 395.48 mi (636.47 km) |
| Bertrix to Orchies | 98.71 mi (158.87 km) |
| Bertrix to Orleans | 203.13 mi (326.91 km) |
| Bertrix to Orly | 149.97 mi (241.36 km) |
| Bertrix to Ormesson-sur-Marne | 142.82 mi (229.84 km) |
| Bertrix to Orsay | 159.60 mi (256.86 km) |
| Bertrix to Orthez | 524.06 mi (843.39 km) |
