| Cayce to Ickenham | 4,045.88 mi (6,511.22 km) |
| Cayce to Ifield | 4,064.44 mi (6,541.08 km) |
| Cayce to Ilford | 4,067.88 mi (6,546.63 km) |
| Cayce to Ilfracombe | 3,899.52 mi (6,275.68 km) |
| Cayce to Ilkeston | 3,984.44 mi (6,412.34 km) |
| Cayce to Ilkley | 3,947.51 mi (6,352.90 km) |
| Cayce to Immingham | 4,016.30 mi (6,463.62 km) |
| Cayce to Ince-in-Makerfield | 3,923.04 mi (6,313.53 km) |
| Cayce to Inverness | 3,805.10 mi (6,123.72 km) |
| Cayce to Inverurie | 3,875.15 mi (6,236.45 km) |
| Cayce to Ipswich | 4,101.46 mi (6,600.66 km) |
| Cayce to Irlam | 3,931.68 mi (6,327.42 km) |
| Cayce to Irthlingborough | 4,024.41 mi (6,476.65 km) |
| Cayce to Irvine | 3,811.81 mi (6,134.51 km) |
| Cayce to Islington | 4,060.39 mi (6,534.57 km) |
