| Fort Madison to Hutchinson (Minnesota) | 332.20 mi (534.62 km) |
| Fort Madison to Hutto (Texas) | 778.10 mi (1,252.23 km) |
| Fort Madison to Hyattsville (Maryland) | 771.95 mi (1,242.33 km) |
| Fort Madison to Hybla Valley (Virginia) | 768.76 mi (1,237.20 km) |
| Fort Madison to Idaho Falls (Idaho) | 1,076.60 mi (1,732.62 km) |
| Fort Madison to Idylwood (Virginia) | 759.97 mi (1,223.05 km) |
| Fort Madison to Ilchester (Maryland) | 777.88 mi (1,251.87 km) |
| Fort Madison to Immokalee (Florida) | 1,133.46 mi (1,824.12 km) |
| Fort Madison to Imperial (California) | 1,439.09 mi (2,316.00 km) |
| Fort Madison to Imperial Beach (California) | 1,526.85 mi (2,457.23 km) |
| Fort Madison to Independence (Kentucky) | 378.99 mi (609.93 km) |
| Fort Madison to Independence (Missouri) | 191.12 mi (307.58 km) |
| Fort Madison to Indian Trail (North Carolina) | 697.96 mi (1,123.26 km) |
| Fort Madison to Indiana (Pennsylvania) | 639.08 mi (1,028.49 km) |
| Fort Madison to Indianapolis (Indiana) | 280.76 mi (451.85 km) |
