| Webster Groves to Ickenham | 4,194.34 mi (6,750.13 km) |
| Webster Groves to Ifield | 4,217.05 mi (6,786.69 km) |
| Webster Groves to Ilford | 4,214.89 mi (6,783.21 km) |
| Webster Groves to Ilfracombe | 4,061.48 mi (6,536.33 km) |
| Webster Groves to Ilkeston | 4,119.22 mi (6,629.25 km) |
| Webster Groves to Ilkley | 4,072.57 mi (6,554.17 km) |
| Webster Groves to Immingham | 4,141.03 mi (6,664.35 km) |
| Webster Groves to Ince-in-Makerfield | 4,054.40 mi (6,524.93 km) |
| Webster Groves to Inverness | 3,892.75 mi (6,264.78 km) |
| Webster Groves to Inverurie | 3,961.76 mi (6,375.83 km) |
| Webster Groves to Ipswich | 4,239.98 mi (6,823.59 km) |
| Webster Groves to Irlam | 4,063.72 mi (6,539.93 km) |
| Webster Groves to Irthlingborough | 4,164.73 mi (6,702.49 km) |
| Webster Groves to Irvine | 3,922.94 mi (6,313.36 km) |
| Webster Groves to Islington | 4,208.07 mi (6,772.23 km) |
