| Herselt to Oignies | 91.82 mi (147.77 km) |
| Herselt to Oissel | 205.04 mi (329.98 km) |
| Herselt to Olivet | 257.64 mi (414.64 km) |
| Herselt to Ollioules | 548.43 mi (882.62 km) |
| Herselt to Olonne-sur-Mer | 434.47 mi (699.22 km) |
| Herselt to Oloron-Sainte-Marie | 600.61 mi (966.59 km) |
| Herselt to Onet Village | 473.89 mi (762.66 km) |
| Herselt to Onnaing | 72.48 mi (116.65 km) |
| Herselt to Orange | 477.56 mi (768.57 km) |
| Herselt to Orchies | 81.92 mi (131.84 km) |
| Herselt to Orleans | 255.14 mi (410.61 km) |
| Herselt to Orly | 194.07 mi (312.33 km) |
| Herselt to Ormesson-sur-Marne | 188.01 mi (302.58 km) |
| Herselt to Orsay | 202.00 mi (325.09 km) |
| Herselt to Orthez | 585.46 mi (942.20 km) |
