| Fort Madison to Decatur (Alabama) | 481.06 mi (774.20 km) |
| Fort Madison to Decatur (Georgia) | 611.69 mi (984.43 km) |
| Fort Madison to Decatur (Illinois) | 137.98 mi (222.06 km) |
| Fort Madison to Deer Park (New York) | 942.91 mi (1,517.46 km) |
| Fort Madison to Deer Park (Texas) | 784.39 mi (1,262.36 km) |
| Fort Madison to Deerfield (Illinois) | 210.42 mi (338.65 km) |
| Fort Madison to Deerfield Beach (Florida) | 1,179.57 mi (1,898.34 km) |
| Fort Madison to Defiance (Ohio) | 367.26 mi (591.05 km) |
| Fort Madison to DeForest (Wisconsin) | 207.73 mi (334.31 km) |
| Fort Madison to DeKalb (Illinois) | 162.68 mi (261.80 km) |
| Fort Madison to Del Aire (California) | 1,549.03 mi (2,492.92 km) |
| Fort Madison to Del City (Oklahoma) | 487.14 mi (783.98 km) |
| Fort Madison to Del Rio (Texas) | 944.75 mi (1,520.43 km) |
| Fort Madison to DeLand (Florida) | 982.34 mi (1,580.92 km) |
| Fort Madison to Delano (California) | 1,545.44 mi (2,487.15 km) |
