| Fort Madison to Ickenham | 4,134.19 mi (6,653.34 km) |
| Fort Madison to Ifield | 4,157.78 mi (6,691.30 km) |
| Fort Madison to Ilford | 4,154.32 mi (6,685.74 km) |
| Fort Madison to Ilfracombe | 4,005.09 mi (6,445.56 km) |
| Fort Madison to Ilkeston | 4,056.25 mi (6,527.90 km) |
| Fort Madison to Ilkley | 4,007.58 mi (6,449.58 km) |
| Fort Madison to Immingham | 4,075.67 mi (6,559.16 km) |
| Fort Madison to Ince-in-Makerfield | 3,990.93 mi (6,422.77 km) |
| Fort Madison to Inverness | 3,820.22 mi (6,148.05 km) |
| Fort Madison to Inverurie | 3,888.69 mi (6,258.24 km) |
| Fort Madison to Ipswich | 4,177.35 mi (6,722.79 km) |
| Fort Madison to Irlam | 4,000.36 mi (6,437.96 km) |
| Fort Madison to Irthlingborough | 4,102.84 mi (6,602.88 km) |
| Fort Madison to Irvine | 3,855.48 mi (6,204.79 km) |
| Fort Madison to Islington | 4,147.68 mi (6,675.05 km) |
