| Unterwellenborn to Oswego (Illinois) | 4,441.66 mi (7,148.16 km) |
| Unterwellenborn to Oswego (New York) | 3,920.49 mi (6,309.42 km) |
| Unterwellenborn to Otsego (Minnesota) | 4,443.61 mi (7,151.30 km) |
| Unterwellenborn to Ottawa (Illinois) | 4,475.52 mi (7,202.65 km) |
| Unterwellenborn to Ottawa (Kansas) | 4,844.71 mi (7,796.81 km) |
| Unterwellenborn to Ottumwa (Iowa) | 4,619.48 mi (7,434.33 km) |
| Unterwellenborn to Overland (Missouri) | 4,665.67 mi (7,508.67 km) |
| Unterwellenborn to Overland Park (Kansas) | 4,809.46 mi (7,740.07 km) |
| Unterwellenborn to Overlea (Maryland) | 4,109.08 mi (6,612.92 km) |
| Unterwellenborn to Oviedo (Florida) | 4,822.36 mi (7,760.84 km) |
| Unterwellenborn to Owasso (Oklahoma) | 4,987.29 mi (8,026.27 km) |
| Unterwellenborn to Owatonna (Minnesota) | 4,490.32 mi (7,226.48 km) |
| Unterwellenborn to Owensboro (Kentucky) | 4,593.77 mi (7,392.96 km) |
| Unterwellenborn to Owings Mills (Maryland) | 4,117.61 mi (6,626.65 km) |
| Unterwellenborn to Owosso (Michigan) | 4,227.35 mi (6,803.26 km) |
