| Cave Spring to Ickenham | 3,848.44 mi (6,193.46 km) |
| Cave Spring to Ifield | 3,867.96 mi (6,224.88 km) |
| Cave Spring to Ilford | 3,870.18 mi (6,228.45 km) |
| Cave Spring to Ilfracombe | 3,704.72 mi (5,962.16 km) |
| Cave Spring to Ilkeston | 3,783.91 mi (6,089.62 km) |
| Cave Spring to Ilkley | 3,744.88 mi (6,026.81 km) |
| Cave Spring to Immingham | 3,813.79 mi (6,137.70 km) |
| Cave Spring to Ince-in-Makerfield | 3,721.64 mi (5,989.41 km) |
| Cave Spring to Inverness | 3,595.04 mi (5,785.65 km) |
| Cave Spring to Inverurie | 3,665.07 mi (5,898.37 km) |
| Cave Spring to Ipswich | 3,902.01 mi (6,279.69 km) |
| Cave Spring to Irlam | 3,730.44 mi (6,003.57 km) |
| Cave Spring to Irthlingborough | 3,825.15 mi (6,155.99 km) |
| Cave Spring to Irvine | 3,606.09 mi (5,803.43 km) |
| Cave Spring to Islington | 3,862.82 mi (6,216.60 km) |
