| Echelon to Ickenham | 3,525.17 mi (5,673.21 km) |
| Echelon to Ifield | 3,544.38 mi (5,704.13 km) |
| Echelon to Ilford | 3,547.00 mi (5,708.35 km) |
| Echelon to Ilfracombe | 3,380.62 mi (5,440.59 km) |
| Echelon to Ilkeston | 3,461.81 mi (5,571.24 km) |
| Echelon to Ilkley | 3,423.73 mi (5,509.97 km) |
| Echelon to Immingham | 3,492.60 mi (5,620.79 km) |
| Echelon to Ince-in-Makerfield | 3,399.91 mi (5,471.63 km) |
| Echelon to Inverness | 3,278.58 mi (5,276.36 km) |
| Echelon to Inverurie | 3,348.63 mi (5,389.10 km) |
| Echelon to Ipswich | 3,579.48 mi (5,760.62 km) |
| Echelon to Irlam | 3,408.64 mi (5,485.67 km) |
| Echelon to Irthlingborough | 3,502.53 mi (5,636.78 km) |
| Echelon to Irvine | 3,286.61 mi (5,289.28 km) |
| Echelon to Islington | 3,539.59 mi (5,696.43 km) |
