| Leek to Octeville | 241.08 mi (387.98 km) |
| Leek to Oignies | 281.34 mi (452.77 km) |
| Leek to Oissel | 292.98 mi (471.50 km) |
| Leek to Olivet | 401.15 mi (645.59 km) |
| Leek to Ollioules | 777.47 mi (1,251.22 km) |
| Leek to Olonne-sur-Mer | 454.21 mi (730.98 km) |
| Leek to Oloron-Sainte-Marie | 688.05 mi (1,107.30 km) |
| Leek to Onet Village | 639.29 mi (1,028.84 km) |
| Leek to Onnaing | 305.06 mi (490.94 km) |
| Leek to Orange | 693.14 mi (1,115.50 km) |
| Leek to Orchies | 289.32 mi (465.62 km) |
| Leek to Orleans | 398.88 mi (641.93 km) |
| Leek to Orly | 357.49 mi (575.33 km) |
| Leek to Ormesson-sur-Marne | 358.47 mi (576.90 km) |
| Leek to Orsay | 355.53 mi (572.17 km) |
