| Sussex to Ickenham | 3,898.10 mi (6,273.38 km) |
| Sussex to Ifield | 3,921.80 mi (6,311.52 km) |
| Sussex to Ilford | 3,918.17 mi (6,305.68 km) |
| Sussex to Ilfracombe | 3,769.59 mi (6,066.57 km) |
| Sussex to Ilkeston | 3,819.84 mi (6,147.43 km) |
| Sussex to Ilkley | 3,771.01 mi (6,068.85 km) |
| Sussex to Immingham | 3,839.07 mi (6,178.39 km) |
| Sussex to Ince-in-Makerfield | 3,754.47 mi (6,042.24 km) |
| Sussex to Inverness | 3,583.50 mi (5,767.09 km) |
| Sussex to Inverurie | 3,651.99 mi (5,877.31 km) |
| Sussex to Ipswich | 3,940.96 mi (6,342.36 km) |
| Sussex to Irlam | 3,763.92 mi (6,057.44 km) |
| Sussex to Irthlingborough | 3,866.53 mi (6,222.58 km) |
| Sussex to Irvine | 3,618.77 mi (5,823.85 km) |
| Sussex to Islington | 3,911.55 mi (6,295.04 km) |
