| Leavenworth to Oerlinghausen | 4,644.68 mi (7,474.89 km) |
| Leavenworth to Oestrich-Winkel | 4,699.94 mi (7,563.83 km) |
| Leavenworth to Offenburg | 4,759.52 mi (7,659.71 km) |
| Leavenworth to Oftersheim | 4,746.61 mi (7,638.93 km) |
| Leavenworth to Ohrdruf | 4,763.01 mi (7,665.32 km) |
| Leavenworth to Ohringen | 4,786.79 mi (7,703.59 km) |
| Leavenworth to Olbernhau | 4,859.58 mi (7,820.74 km) |
| Leavenworth to Olching | 4,894.57 mi (7,877.05 km) |
| Leavenworth to Oldenburg | 4,582.43 mi (7,374.71 km) |
| Leavenworth to Oldenburg in Holstein | 4,625.28 mi (7,443.67 km) |
| Leavenworth to Olfen | 4,609.70 mi (7,418.60 km) |
| Leavenworth to Olpe | 4,653.30 mi (7,488.76 km) |
| Leavenworth to Olsberg | 4,662.96 mi (7,504.31 km) |
| Leavenworth to Oranienburg | 4,766.75 mi (7,671.35 km) |
| Leavenworth to Ortenberg | 4,723.38 mi (7,601.54 km) |
