| Fort Madison to Blue Island (Illinois) | 203.94 mi (328.21 km) |
| Fort Madison to Blue Springs (Missouri) | 190.72 mi (306.94 km) |
| Fort Madison to Bluffdale (Utah) | 1,078.44 mi (1,735.57 km) |
| Fort Madison to Bluffton (Indiana) | 323.74 mi (521.01 km) |
| Fort Madison to Bluffton (South Carolina) | 819.22 mi (1,318.40 km) |
| Fort Madison to Blythe (California) | 1,365.02 mi (2,196.80 km) |
| Fort Madison to Blytheville (Arkansas) | 333.29 mi (536.38 km) |
| Fort Madison to Boca Raton (Florida) | 1,176.00 mi (1,892.59 km) |
| Fort Madison to Boerne (Texas) | 855.98 mi (1,377.56 km) |
| Fort Madison to Bogalusa (Louisiana) | 684.92 mi (1,102.27 km) |
| Fort Madison to Boiling Springs (South Carolina) | 639.71 mi (1,029.52 km) |
| Fort Madison to Boise (Idaho) | 1,286.80 mi (2,070.91 km) |
| Fort Madison to Bolingbrook (Illinois) | 184.44 mi (296.83 km) |
| Fort Madison to Bolivar (Missouri) | 235.91 mi (379.67 km) |
| Fort Madison to Bon Air (Virginia) | 768.68 mi (1,237.07 km) |
