| Fort Thomas to Ickenham | 3,940.50 mi (6,341.62 km) |
| Fort Thomas to Ifield | 3,961.91 mi (6,376.08 km) |
| Fort Thomas to Ilford | 3,961.60 mi (6,375.58 km) |
| Fort Thomas to Ilfracombe | 3,802.77 mi (6,119.97 km) |
| Fort Thomas to Ilkeston | 3,869.73 mi (6,227.72 km) |
| Fort Thomas to Ilkley | 3,826.25 mi (6,157.75 km) |
| Fort Thomas to Immingham | 3,895.07 mi (6,268.50 km) |
| Fort Thomas to Ince-in-Makerfield | 3,805.84 mi (6,124.92 km) |
| Fort Thomas to Inverness | 3,659.10 mi (5,888.75 km) |
| Fort Thomas to Inverurie | 3,728.76 mi (6,000.86 km) |
| Fort Thomas to Ipswich | 3,989.62 mi (6,420.68 km) |
| Fort Thomas to Irlam | 3,814.96 mi (6,139.59 km) |
| Fort Thomas to Irthlingborough | 3,913.52 mi (6,298.19 km) |
| Fort Thomas to Irvine | 3,680.93 mi (5,923.89 km) |
| Fort Thomas to Islington | 3,954.53 mi (6,364.21 km) |
