| Harrison to Ickenham | 3,421.88 mi (5,506.99 km) |
| Harrison to Ifield | 3,441.27 mi (5,538.19 km) |
| Harrison to Ilford | 3,443.67 mi (5,542.05 km) |
| Harrison to Ilfracombe | 3,277.85 mi (5,275.19 km) |
| Harrison to Ilkeston | 3,357.99 mi (5,404.17 km) |
| Harrison to Ilkley | 3,319.59 mi (5,342.37 km) |
| Harrison to Immingham | 3,388.47 mi (5,453.21 km) |
| Harrison to Ince-in-Makerfield | 3,295.96 mi (5,304.33 km) |
| Harrison to Inverness | 3,173.54 mi (5,107.31 km) |
| Harrison to Inverurie | 3,243.59 mi (5,220.05 km) |
| Harrison to Ipswich | 3,475.85 mi (5,593.83 km) |
| Harrison to Irlam | 3,304.71 mi (5,318.42 km) |
| Harrison to Irthlingborough | 3,398.93 mi (5,470.05 km) |
| Harrison to Irvine | 3,182.04 mi (5,120.99 km) |
| Harrison to Islington | 3,436.29 mi (5,530.17 km) |
