| North Highlands to Ickenham | 5,259.10 mi (8,463.70 km) |
| North Highlands to Ifield | 5,288.04 mi (8,510.28 km) |
| North Highlands to Ilford | 5,274.90 mi (8,489.13 km) |
| North Highlands to Ilfracombe | 5,164.65 mi (8,311.71 km) |
| North Highlands to Ilkeston | 5,163.62 mi (8,310.04 km) |
| North Highlands to Ilkley | 5,101.94 mi (8,210.77 km) |
| North Highlands to Immingham | 5,163.12 mi (8,309.24 km) |
| North Highlands to Ince-in-Makerfield | 5,098.11 mi (8,204.62 km) |
| North Highlands to Inverness | 4,864.63 mi (7,828.87 km) |
| North Highlands to Inverurie | 4,924.09 mi (7,924.56 km) |
| North Highlands to Ipswich | 5,280.65 mi (8,498.39 km) |
| North Highlands to Irlam | 5,107.91 mi (8,220.39 km) |
| North Highlands to Irthlingborough | 5,215.98 mi (8,394.32 km) |
| North Highlands to Irvine | 4,939.22 mi (7,948.90 km) |
| North Highlands to Islington | 5,270.02 mi (8,481.28 km) |
