| Leavenworth to Oswego (Illinois) | 382.38 mi (615.38 km) |
| Leavenworth to Oswego (New York) | 994.31 mi (1,600.18 km) |
| Leavenworth to Otsego (Minnesota) | 415.92 mi (669.35 km) |
| Leavenworth to Ottawa (Illinois) | 350.37 mi (563.87 km) |
| Leavenworth to Ottawa (Kansas) | 53.27 mi (85.72 km) |
| Leavenworth to Ottumwa (Iowa) | 176.68 mi (284.34 km) |
| Leavenworth to Overland (Missouri) | 248.34 mi (399.66 km) |
| Leavenworth to Overland Park (Kansas) | 32.75 mi (52.71 km) |
| Leavenworth to Overlea (Maryland) | 981.82 mi (1,580.08 km) |
| Leavenworth to Oviedo (Florida) | 1,075.73 mi (1,731.22 km) |
| Leavenworth to Owasso (Oklahoma) | 215.54 mi (346.87 km) |
| Leavenworth to Owatonna (Minnesota) | 340.74 mi (548.37 km) |
| Leavenworth to Owensboro (Kentucky) | 435.40 mi (700.71 km) |
| Leavenworth to Owings Mills (Maryland) | 966.95 mi (1,556.15 km) |
| Leavenworth to Owosso (Michigan) | 613.35 mi (987.09 km) |
