| Fort Madison to Carrollwood (Florida) | 1,002.48 mi (1,613.34 km) |
| Fort Madison to Carson (California) | 1,545.50 mi (2,487.25 km) |
| Fort Madison to Carson City (Nevada) | 1,502.39 mi (2,417.86 km) |
| Fort Madison to Carteret (New Jersey) | 896.80 mi (1,443.26 km) |
| Fort Madison to Cartersville (Georgia) | 572.58 mi (921.48 km) |
| Fort Madison to Carthage (Missouri) | 288.12 mi (463.68 km) |
| Fort Madison to Cary (Illinois) | 194.73 mi (313.38 km) |
| Fort Madison to Cary (North Carolina) | 757.13 mi (1,218.48 km) |
| Fort Madison to Casa de Oro-Mount Helix (California) | 1,512.80 mi (2,434.62 km) |
| Fort Madison to Casa Grande (Arizona) | 1,245.18 mi (2,003.93 km) |
| Fort Madison to Casas Adobes (Arizona) | 1,229.01 mi (1,977.89 km) |
| Fort Madison to Cascades (Virginia) | 747.99 mi (1,203.77 km) |
| Fort Madison to Casper (Wyoming) | 785.88 mi (1,264.75 km) |
| Fort Madison to Casselberry (Florida) | 1,002.27 mi (1,613.00 km) |
| Fort Madison to Castaic (California) | 1,546.38 mi (2,488.65 km) |
