| Fort Madison to Sugar Hill (Georgia) | 602.01 mi (968.84 km) |
| Fort Madison to Sugar Land (Texas) | 799.19 mi (1,286.17 km) |
| Fort Madison to Sugarland Run (Virginia) | 748.81 mi (1,205.10 km) |
| Fort Madison to Sugarmill Woods (Florida) | 962.02 mi (1,548.22 km) |
| Fort Madison to Suisun City (California) | 1,635.95 mi (2,632.81 km) |
| Fort Madison to Suitland (Maryland) | 775.43 mi (1,247.93 km) |
| Fort Madison to Sulphur (Louisiana) | 726.79 mi (1,169.65 km) |
| Fort Madison to Sulphur Springs (Texas) | 567.66 mi (913.57 km) |
| Fort Madison to Summerfield (Maryland) | 777.40 mi (1,251.10 km) |
| Fort Madison to Summerfield (North Carolina) | 690.46 mi (1,111.19 km) |
| Fort Madison to Summerlin South (Nevada) | 1,331.15 mi (2,142.28 km) |
| Fort Madison to Summerville (South Carolina) | 810.58 mi (1,304.50 km) |
| Fort Madison to Summit (Illinois) | 200.71 mi (323.02 km) |
| Fort Madison to Summit (New Jersey) | 888.83 mi (1,430.43 km) |
| Fort Madison to Sumner (Washington) | 1,591.40 mi (2,561.10 km) |
