| Leopoldsburg to Oignies | 108.46 mi (174.55 km) |
| Leopoldsburg to Oissel | 221.13 mi (355.87 km) |
| Leopoldsburg to Olivet | 270.48 mi (435.29 km) |
| Leopoldsburg to Ollioules | 551.89 mi (888.18 km) |
| Leopoldsburg to Olonne-sur-Mer | 449.50 mi (723.40 km) |
| Leopoldsburg to Oloron-Sainte-Marie | 612.33 mi (985.44 km) |
| Leopoldsburg to Onet Village | 482.50 mi (776.52 km) |
| Leopoldsburg to Onnaing | 88.25 mi (142.03 km) |
| Leopoldsburg to Orange | 482.62 mi (776.70 km) |
| Leopoldsburg to Orchies | 98.42 mi (158.39 km) |
| Leopoldsburg to Orleans | 268.02 mi (431.34 km) |
| Leopoldsburg to Orly | 207.56 mi (334.04 km) |
| Leopoldsburg to Ormesson-sur-Marne | 201.31 mi (323.97 km) |
| Leopoldsburg to Orsay | 215.76 mi (347.24 km) |
| Leopoldsburg to Orthez | 597.49 mi (961.57 km) |
