| Somerset to Ickenham | 3,476.07 mi (5,594.20 km) |
| Somerset to Ifield | 3,495.44 mi (5,625.37 km) |
| Somerset to Ilford | 3,497.86 mi (5,629.27 km) |
| Somerset to Ilfracombe | 3,331.97 mi (5,362.29 km) |
| Somerset to Ilkeston | 3,412.22 mi (5,491.44 km) |
| Somerset to Ilkley | 3,373.82 mi (5,429.64 km) |
| Somerset to Immingham | 3,442.70 mi (5,540.49 km) |
| Somerset to Ince-in-Makerfield | 3,350.19 mi (5,391.61 km) |
| Somerset to Inverness | 3,227.58 mi (5,194.29 km) |
| Somerset to Inverurie | 3,297.64 mi (5,307.03 km) |
| Somerset to Ipswich | 3,530.06 mi (5,681.09 km) |
| Somerset to Irlam | 3,358.94 mi (5,405.69 km) |
| Somerset to Irthlingborough | 3,453.15 mi (5,557.30 km) |
| Somerset to Irvine | 3,236.23 mi (5,208.21 km) |
| Somerset to Islington | 3,490.48 mi (5,617.38 km) |
