| Fort Hood to Oswego (Illinois) | 897.07 mi (1,443.70 km) |
| Fort Hood to Oswego (New York) | 1,439.56 mi (2,316.75 km) |
| Fort Hood to Otsego (Minnesota) | 1,001.76 mi (1,612.18 km) |
| Fort Hood to Ottawa (Illinois) | 863.61 mi (1,389.85 km) |
| Fort Hood to Ottawa (Kansas) | 535.06 mi (861.09 km) |
| Fort Hood to Ottumwa (Iowa) | 745.32 mi (1,199.48 km) |
| Fort Hood to Overland (Missouri) | 669.82 mi (1,077.97 km) |
| Fort Hood to Overland Park (Kansas) | 563.39 mi (906.70 km) |
| Fort Hood to Overlea (Maryland) | 1,323.36 mi (2,129.75 km) |
| Fort Hood to Oviedo (Florida) | 1,007.71 mi (1,621.76 km) |
| Fort Hood to Owasso (Oklahoma) | 373.21 mi (600.63 km) |
| Fort Hood to Owatonna (Minnesota) | 928.76 mi (1,494.70 km) |
| Fort Hood to Owensboro (Kentucky) | 759.83 mi (1,222.83 km) |
| Fort Hood to Owings Mills (Maryland) | 1,310.62 mi (2,109.24 km) |
| Fort Hood to Owosso (Michigan) | 1,108.09 mi (1,783.30 km) |
