| Fort Hood to Orangevale (California) | 1,421.72 mi (2,288.04 km) |
| Fort Hood to Orchards (Washington) | 1,663.51 mi (2,677.16 km) |
| Fort Hood to Orcutt (California) | 1,333.90 mi (2,146.70 km) |
| Fort Hood to Oregon (Ohio) | 1,076.66 mi (1,732.71 km) |
| Fort Hood to Oregon (Wisconsin) | 935.80 mi (1,506.03 km) |
| Fort Hood to Oregon City (Oregon) | 1,654.82 mi (2,663.18 km) |
| Fort Hood to Orem (Utah) | 1,002.92 mi (1,614.04 km) |
| Fort Hood to Orinda (California) | 1,460.01 mi (2,349.66 km) |
| Fort Hood to Orland Park (Illinois) | 908.66 mi (1,462.34 km) |
| Fort Hood to Orlando (Florida) | 1,001.97 mi (1,612.52 km) |
| Fort Hood to Ormond Beach (Florida) | 1,003.08 mi (1,614.31 km) |
| Fort Hood to Oro Valley (Arizona) | 779.48 mi (1,254.45 km) |
| Fort Hood to Oroville (California) | 1,454.17 mi (2,340.25 km) |
| Fort Hood to Oshkosh (Wisconsin) | 1,022.05 mi (1,644.83 km) |
| Fort Hood to Oskaloosa (Iowa) | 757.67 mi (1,219.35 km) |
