| Fort Madison to Castle Pines (Colorado) | 718.88 mi (1,156.93 km) |
| Fort Madison to Castle Rock (Colorado) | 719.12 mi (1,157.31 km) |
| Fort Madison to Castro Valley (California) | 1,649.04 mi (2,653.87 km) |
| Fort Madison to Catalina Foothills (Arizona) | 1,224.22 mi (1,970.20 km) |
| Fort Madison to Cataño (Puerto Rico) | 2,140.00 mi (3,444.00 km) |
| Fort Madison to Cathedral City (California) | 1,452.97 mi (2,338.33 km) |
| Fort Madison to Catonsville (Maryland) | 778.59 mi (1,253.02 km) |
| Fort Madison to Cave Spring (Virginia) | 652.72 mi (1,050.46 km) |
| Fort Madison to Cayce (South Carolina) | 729.72 mi (1,174.37 km) |
| Fort Madison to Cayey (Puerto Rico) | 2,156.61 mi (3,470.72 km) |
| Fort Madison to Cedar City (Utah) | 1,179.48 mi (1,898.19 km) |
| Fort Madison to Cedar Falls (Iowa) | 143.04 mi (230.20 km) |
| Fort Madison to Cedar Hill (Texas) | 636.31 mi (1,024.04 km) |
| Fort Madison to Cedar Lake (Indiana) | 210.45 mi (338.68 km) |
| Fort Madison to Cedar Mill (Oregon) | 1,612.15 mi (2,594.51 km) |
