| Fort Madison to Ridgeland (Mississippi) | 570.27 mi (917.76 km) |
| Fort Madison to Ridgewood (New Jersey) | 900.48 mi (1,449.18 km) |
| Fort Madison to Rifle (Colorado) | 870.15 mi (1,400.37 km) |
| Fort Madison to Rincon (Georgia) | 803.23 mi (1,292.67 km) |
| Fort Madison to Ringwood (New Jersey) | 891.48 mi (1,434.70 km) |
| Fort Madison to Río Grande (Puerto Rico) | 2,155.75 mi (3,469.34 km) |
| Fort Madison to Rio Grande City (Texas) | 1,072.84 mi (1,726.57 km) |
| Fort Madison to Rio Linda (California) | 1,598.45 mi (2,572.46 km) |
| Fort Madison to Rio Rancho (New Mexico) | 912.08 mi (1,467.85 km) |
| Fort Madison to Rio Rico (Arizona) | 1,260.93 mi (2,029.27 km) |
| Fort Madison to Ripon (California) | 1,599.59 mi (2,574.30 km) |
| Fort Madison to River Edge (New Jersey) | 904.61 mi (1,455.83 km) |
| Fort Madison to River Falls (Wisconsin) | 300.00 mi (482.81 km) |
| Fort Madison to River Forest (Illinois) | 203.44 mi (327.41 km) |
| Fort Madison to River Grove (Illinois) | 203.43 mi (327.39 km) |
