| Fort Thomas to Indianola (Iowa) | 505.70 mi (813.85 km) |
| Fort Thomas to Indio (California) | 1,795.92 mi (2,890.25 km) |
| Fort Thomas to Inglewood (California) | 1,903.59 mi (3,063.54 km) |
| Fort Thomas to Inkster (Michigan) | 229.87 mi (369.94 km) |
| Fort Thomas to Inver Grove Heights (Minnesota) | 593.68 mi (955.43 km) |
| Fort Thomas to Inwood (New York) | 577.16 mi (928.84 km) |
| Fort Thomas to Iona (Florida) | 879.97 mi (1,416.17 km) |
| Fort Thomas to Ionia (Michigan) | 271.21 mi (436.46 km) |
| Fort Thomas to Iowa City (Iowa) | 412.77 mi (664.28 km) |
| Fort Thomas to Irmo (South Carolina) | 388.44 mi (625.14 km) |
| Fort Thomas to Irondale (Alabama) | 401.76 mi (646.57 km) |
| Fort Thomas to Ironton (Ohio) | 102.73 mi (165.34 km) |
| Fort Thomas to Irvine (California) | 1,879.87 mi (3,025.37 km) |
| Fort Thomas to Irving (Texas) | 820.31 mi (1,320.17 km) |
| Fort Thomas to Isabela (Puerto Rico) | 1,763.81 mi (2,838.58 km) |
