| Alum Rock to Ickenham | 5,347.86 mi (8,606.55 km) |
| Alum Rock to Ifield | 5,376.70 mi (8,652.97 km) |
| Alum Rock to Ilford | 5,363.79 mi (8,632.18 km) |
| Alum Rock to Ilfracombe | 5,252.41 mi (8,452.93 km) |
| Alum Rock to Ilkeston | 5,252.69 mi (8,453.39 km) |
| Alum Rock to Ilkley | 5,191.23 mi (8,354.48 km) |
| Alum Rock to Immingham | 5,252.64 mi (8,453.30 km) |
| Alum Rock to Ince-in-Makerfield | 5,187.11 mi (8,347.85 km) |
| Alum Rock to Inverness | 4,954.69 mi (7,973.81 km) |
| Alum Rock to Inverurie | 5,014.39 mi (8,069.88 km) |
| Alum Rock to Ipswich | 5,369.94 mi (8,642.09 km) |
| Alum Rock to Irlam | 5,196.92 mi (8,363.63 km) |
| Alum Rock to Irthlingborough | 5,304.98 mi (8,537.54 km) |
| Alum Rock to Irvine | 5,028.56 mi (8,092.69 km) |
| Alum Rock to Islington | 5,358.86 mi (8,624.25 km) |
