| Machelen to Oignies | 70.13 mi (112.87 km) |
| Machelen to Oissel | 183.55 mi (295.39 km) |
| Machelen to Olivet | 239.37 mi (385.23 km) |
| Machelen to Ollioules | 540.98 mi (870.63 km) |
| Machelen to Olonne-sur-Mer | 413.78 mi (665.92 km) |
| Machelen to Oloron-Sainte-Marie | 583.26 mi (938.67 km) |
| Machelen to Onet Village | 460.22 mi (740.66 km) |
| Machelen to Onnaing | 51.51 mi (82.89 km) |
| Machelen to Orange | 468.22 mi (753.53 km) |
| Machelen to Orchies | 60.25 mi (96.96 km) |
| Machelen to Orleans | 236.83 mi (381.13 km) |
| Machelen to Orly | 175.21 mi (281.97 km) |
| Machelen to Ormesson-sur-Marne | 169.40 mi (272.62 km) |
| Machelen to Orsay | 182.80 mi (294.18 km) |
| Machelen to Orthez | 567.76 mi (913.73 km) |
