| Fort Madison to Cadillac (Michigan) | 392.80 mi (632.15 km) |
| Fort Madison to Caguas (Puerto Rico) | 2,155.40 mi (3,468.77 km) |
| Fort Madison to Cahokia (Illinois) | 155.13 mi (249.65 km) |
| Fort Madison to Calabasas (California) | 1,558.13 mi (2,507.56 km) |
| Fort Madison to Caldwell (Idaho) | 1,308.27 mi (2,105.45 km) |
| Fort Madison to Caledonia (Wisconsin) | 233.98 mi (376.56 km) |
| Fort Madison to Calera (Alabama) | 576.84 mi (928.34 km) |
| Fort Madison to Calexico (California) | 1,440.33 mi (2,317.98 km) |
| Fort Madison to Calhoun (Georgia) | 549.87 mi (884.93 km) |
| Fort Madison to California (Maryland) | 807.56 mi (1,299.64 km) |
| Fort Madison to California City (California) | 1,488.33 mi (2,395.24 km) |
| Fort Madison to Callaway (Florida) | 794.14 mi (1,278.05 km) |
| Fort Madison to Calumet City (Illinois) | 209.35 mi (336.92 km) |
| Fort Madison to Calverton (Maryland) | 770.77 mi (1,240.44 km) |
| Fort Madison to Camano (Washington) | 1,609.67 mi (2,590.52 km) |
