| Nivelles to Oignies | 58.65 mi (94.38 km) |
| Nivelles to Oissel | 167.03 mi (268.81 km) |
| Nivelles to Olivet | 217.21 mi (349.56 km) |
| Nivelles to Ollioules | 519.35 mi (835.81 km) |
| Nivelles to Olonne-sur-Mer | 394.39 mi (634.70 km) |
| Nivelles to Oloron-Sainte-Marie | 560.67 mi (902.30 km) |
| Nivelles to Onet Village | 437.04 mi (703.35 km) |
| Nivelles to Onnaing | 34.36 mi (55.29 km) |
| Nivelles to Orange | 445.90 mi (717.61 km) |
| Nivelles to Orchies | 47.70 mi (76.76 km) |
| Nivelles to Orleans | 214.69 mi (345.51 km) |
| Nivelles to Orly | 153.46 mi (246.98 km) |
| Nivelles to Ormesson-sur-Marne | 147.45 mi (237.30 km) |
| Nivelles to Orsay | 161.36 mi (259.69 km) |
| Nivelles to Orthez | 545.32 mi (877.61 km) |
