| Fort Madison to Joliet (Illinois) | 177.90 mi (286.30 km) |
| Fort Madison to Jonesboro (Arkansas) | 333.61 mi (536.89 km) |
| Fort Madison to Joplin (Missouri) | 297.84 mi (479.33 km) |
| Fort Madison to Joppatowne (Maryland) | 797.02 mi (1,282.68 km) |
| Fort Madison to Juana Díaz (Puerto Rico) | 2,146.03 mi (3,453.71 km) |
| Fort Madison to Junction City (Kansas) | 311.84 mi (501.87 km) |
| Fort Madison to Juneau (Alaska) | 2,225.48 mi (3,581.57 km) |
| Fort Madison to Jupiter (Florida) | 1,143.52 mi (1,840.32 km) |
| Fort Madison to Jupiter Farms (Florida) | 1,140.01 mi (1,834.67 km) |
| Fort Madison to Jurupa Valley (California) | 1,499.99 mi (2,414.00 km) |
| Fort Madison to Justice (Illinois) | 198.77 mi (319.88 km) |
| Fort Madison to Kahului (Hawaii) | 4,004.90 mi (6,445.27 km) |
| Fort Madison to Kailua (Hawaii) | 4,051.05 mi (6,519.53 km) |
| Fort Madison to Kalamazoo (Michigan) | 319.50 mi (514.19 km) |
| Fort Madison to Kalispell (Montana) | 1,243.09 mi (2,000.56 km) |
