| Fort Thomas to Hutchinson (Minnesota) | 647.83 mi (1,042.58 km) |
| Fort Thomas to Hutto (Texas) | 946.85 mi (1,523.81 km) |
| Fort Thomas to Hyattsville (Maryland) | 402.41 mi (647.61 km) |
| Fort Thomas to Hybla Valley (Virginia) | 396.75 mi (638.51 km) |
| Fort Thomas to Idaho Falls (Idaho) | 1,457.09 mi (2,344.97 km) |
| Fort Thomas to Idylwood (Virginia) | 389.29 mi (626.50 km) |
| Fort Thomas to Ilchester (Maryland) | 411.69 mi (662.54 km) |
| Fort Thomas to Immokalee (Florida) | 891.72 mi (1,435.08 km) |
| Fort Thomas to Imperial (California) | 1,783.60 mi (2,870.43 km) |
| Fort Thomas to Imperial Beach (California) | 1,873.61 mi (3,015.29 km) |
| Fort Thomas to Independence (Kentucky) | 10.34 mi (16.64 km) |
| Fort Thomas to Independence (Missouri) | 530.60 mi (853.92 km) |
| Fort Thomas to Indian Trail (North Carolina) | 347.49 mi (559.24 km) |
| Fort Thomas to Indiana (Pennsylvania) | 300.41 mi (483.46 km) |
| Fort Thomas to Indianapolis (Indiana) | 102.43 mi (164.85 km) |
