| Williamsport to Ickenham | 3,546.96 mi (5,708.28 km) |
| Williamsport to Ifield | 3,567.31 mi (5,741.04 km) |
| Williamsport to Ilford | 3,568.44 mi (5,742.86 km) |
| Williamsport to Ilfracombe | 3,405.79 mi (5,481.09 km) |
| Williamsport to Ilkeston | 3,479.82 mi (5,600.23 km) |
| Williamsport to Ilkley | 3,439.06 mi (5,534.63 km) |
| Williamsport to Immingham | 3,507.98 mi (5,645.55 km) |
| Williamsport to Ince-in-Makerfield | 3,416.87 mi (5,498.93 km) |
| Williamsport to Inverness | 3,283.48 mi (5,284.26 km) |
| Williamsport to Inverurie | 3,353.47 mi (5,396.88 km) |
| Williamsport to Ipswich | 3,598.72 mi (5,791.59 km) |
| Williamsport to Irlam | 3,425.80 mi (5,513.30 km) |
| Williamsport to Irthlingborough | 3,522.11 mi (5,668.29 km) |
| Williamsport to Irvine | 3,297.86 mi (5,307.39 km) |
| Williamsport to Islington | 3,561.20 mi (5,731.20 km) |
