| Fort Thomas to Decatur (Alabama) | 341.55 mi (549.67 km) |
| Fort Thomas to Decatur (Georgia) | 366.92 mi (590.50 km) |
| Fort Thomas to Decatur (Illinois) | 244.99 mi (394.27 km) |
| Fort Thomas to Deer Park (New York) | 600.68 mi (966.70 km) |
| Fort Thomas to Deer Park (Texas) | 887.87 mi (1,428.88 km) |
| Fort Thomas to Deerfield (Illinois) | 277.85 mi (447.16 km) |
| Fort Thomas to Deerfield Beach (Florida) | 917.46 mi (1,476.51 km) |
| Fort Thomas to Defiance (Ohio) | 152.16 mi (244.87 km) |
| Fort Thomas to DeForest (Wisconsin) | 383.22 mi (616.73 km) |
| Fort Thomas to DeKalb (Illinois) | 299.52 mi (482.02 km) |
| Fort Thomas to Del Aire (California) | 1,905.90 mi (3,067.25 km) |
| Fort Thomas to Del City (Oklahoma) | 756.20 mi (1,216.98 km) |
| Fort Thomas to Del Rio (Texas) | 1,150.61 mi (1,851.72 km) |
| Fort Thomas to DeLand (Florida) | 717.99 mi (1,155.50 km) |
| Fort Thomas to Delano (California) | 1,912.11 mi (3,077.24 km) |
