| Fort Thomas to Oak Harbor (Washington) | 1,987.45 mi (3,198.49 km) |
| Fort Thomas to Oak Hills (Oregon) | 1,991.54 mi (3,205.07 km) |
| Fort Thomas to Oak Lawn (Illinois) | 251.53 mi (404.80 km) |
| Fort Thomas to Oak Park (California) | 1,920.75 mi (3,091.14 km) |
| Fort Thomas to Oak Park (Illinois) | 261.47 mi (420.80 km) |
| Fort Thomas to Oak Park (Michigan) | 243.11 mi (391.24 km) |
| Fort Thomas to Oak Ridge (Florida) | 753.20 mi (1,212.17 km) |
| Fort Thomas to Oak Ridge (New Jersey) | 543.12 mi (874.06 km) |
| Fort Thomas to Oak Ridge (Tennessee) | 215.48 mi (346.79 km) |
| Fort Thomas to Oakdale (California) | 1,959.05 mi (3,152.78 km) |
| Fort Thomas to Oakdale (Minnesota) | 597.24 mi (961.16 km) |
| Fort Thomas to Oakland (California) | 2,031.07 mi (3,268.68 km) |
| Fort Thomas to Oakland (New Jersey) | 556.22 mi (895.15 km) |
| Fort Thomas to Oakland Park (Florida) | 925.56 mi (1,489.54 km) |
| Fort Thomas to Oakleaf Plantation (Florida) | 633.36 mi (1,019.29 km) |
