| Leavenworth to Octeville | 4,352.37 mi (7,004.47 km) |
| Leavenworth to Oignies | 4,498.39 mi (7,239.46 km) |
| Leavenworth to Oissel | 4,467.89 mi (7,190.38 km) |
| Leavenworth to Olivet | 4,553.58 mi (7,328.28 km) |
| Leavenworth to Ollioules | 4,896.19 mi (7,879.65 km) |
| Leavenworth to Olonne-sur-Mer | 4,455.71 mi (7,170.78 km) |
| Leavenworth to Oloron-Sainte-Marie | 4,626.81 mi (7,446.14 km) |
| Leavenworth to Onet Village | 4,714.78 mi (7,587.70 km) |
| Leavenworth to Onnaing | 4,523.84 mi (7,280.42 km) |
| Leavenworth to Orange | 4,813.65 mi (7,746.82 km) |
| Leavenworth to Orchies | 4,507.49 mi (7,254.10 km) |
| Leavenworth to Orleans | 4,552.47 mi (7,326.49 km) |
| Leavenworth to Orly | 4,539.78 mi (7,306.07 km) |
| Leavenworth to Ormesson-sur-Marne | 4,543.80 mi (7,312.53 km) |
| Leavenworth to Orsay | 4,533.61 mi (7,296.13 km) |
