| Rotselaar to Oignies | 82.18 mi (132.25 km) |
| Rotselaar to Oissel | 195.01 mi (313.84 km) |
| Rotselaar to Olivet | 247.87 mi (398.91 km) |
| Rotselaar to Ollioules | 542.36 mi (872.85 km) |
| Rotselaar to Olonne-sur-Mer | 424.33 mi (682.89 km) |
| Rotselaar to Oloron-Sainte-Marie | 591.10 mi (951.29 km) |
| Rotselaar to Onet Village | 465.51 mi (749.16 km) |
| Rotselaar to Onnaing | 62.36 mi (100.36 km) |
| Rotselaar to Orange | 470.74 mi (757.58 km) |
| Rotselaar to Orchies | 72.11 mi (116.05 km) |
| Rotselaar to Orleans | 245.36 mi (394.87 km) |
| Rotselaar to Orly | 184.16 mi (296.38 km) |
| Rotselaar to Ormesson-sur-Marne | 178.15 mi (286.70 km) |
| Rotselaar to Orsay | 192.02 mi (309.03 km) |
| Rotselaar to Orthez | 575.86 mi (926.75 km) |
