| Fort Madison to Security-Widefield (Colorado) | 721.48 mi (1,161.12 km) |
| Fort Madison to Sedalia (Missouri) | 165.93 mi (267.03 km) |
| Fort Madison to Sedro-Woolley (Washington) | 1,601.85 mi (2,577.93 km) |
| Fort Madison to Seguin (Texas) | 848.36 mi (1,365.31 km) |
| Fort Madison to Selden (New York) | 956.56 mi (1,539.44 km) |
| Fort Madison to Selma (Alabama) | 615.24 mi (990.13 km) |
| Fort Madison to Selma (California) | 1,544.76 mi (2,486.05 km) |
| Fort Madison to Selma (Texas) | 857.24 mi (1,379.59 km) |
| Fort Madison to Seminole (Florida) | 1,008.14 mi (1,622.44 km) |
| Fort Madison to Seven Hills (Ohio) | 507.08 mi (816.06 km) |
| Fort Madison to Seven Oaks (South Carolina) | 720.74 mi (1,159.92 km) |
| Fort Madison to Severn (Maryland) | 782.88 mi (1,259.92 km) |
| Fort Madison to Severna Park (Maryland) | 790.24 mi (1,271.77 km) |
| Fort Madison to Sevierville (Tennessee) | 533.76 mi (859.00 km) |
| Fort Madison to Seymour (Indiana) | 312.02 mi (502.15 km) |
