| Shasta Lake to Ickenham | 5,172.36 mi (8,324.11 km) |
| Shasta Lake to Ifield | 5,201.70 mi (8,371.33 km) |
| Shasta Lake to Ilford | 5,187.63 mi (8,348.69 km) |
| Shasta Lake to Ilfracombe | 5,082.10 mi (8,178.85 km) |
| Shasta Lake to Ilkeston | 5,075.62 mi (8,168.42 km) |
| Shasta Lake to Ilkley | 5,012.98 mi (8,067.61 km) |
| Shasta Lake to Immingham | 5,073.14 mi (8,164.43 km) |
| Shasta Lake to Ince-in-Makerfield | 5,010.46 mi (8,063.56 km) |
| Shasta Lake to Inverness | 4,772.26 mi (7,680.21 km) |
| Shasta Lake to Inverurie | 4,830.53 mi (7,773.99 km) |
| Shasta Lake to Ipswich | 5,191.60 mi (8,355.08 km) |
| Shasta Lake to Irlam | 5,020.24 mi (8,079.30 km) |
| Shasta Lake to Irthlingborough | 5,128.28 mi (8,253.17 km) |
| Shasta Lake to Irvine | 4,850.15 mi (7,805.56 km) |
| Shasta Lake to Islington | 5,182.96 mi (8,341.17 km) |
