| Westbrook to Ickenham | 3,173.54 mi (5,107.32 km) |
| Westbrook to Ifield | 3,193.31 mi (5,139.14 km) |
| Westbrook to Ilford | 3,195.22 mi (5,142.21 km) |
| Westbrook to Ilfracombe | 3,030.66 mi (4,877.38 km) |
| Westbrook to Ilkeston | 3,108.52 mi (5,002.68 km) |
| Westbrook to Ilkley | 3,069.44 mi (4,939.78 km) |
| Westbrook to Immingham | 3,138.34 mi (5,050.67 km) |
| Westbrook to Ince-in-Makerfield | 3,046.20 mi (4,902.39 km) |
| Westbrook to Inverness | 2,921.68 mi (4,701.99 km) |
| Westbrook to Inverurie | 2,991.73 mi (4,814.73 km) |
| Westbrook to Ipswich | 3,226.73 mi (5,192.93 km) |
| Westbrook to Irlam | 3,055.01 mi (4,916.56 km) |
| Westbrook to Irthlingborough | 3,149.91 mi (5,069.28 km) |
| Westbrook to Irvine | 2,931.03 mi (4,717.03 km) |
| Westbrook to Islington | 3,187.89 mi (5,130.41 km) |
