| Southend to Ickenham | 49.77 mi (80.09 km) |
| Southend to Ifield | 49.36 mi (79.44 km) |
| Southend to Ilford | 26.82 mi (43.16 km) |
| Southend to Ilfracombe | 209.59 mi (337.31 km) |
| Southend to Ilkeston | 130.10 mi (209.38 km) |
| Southend to Ilkley | 195.29 mi (314.28 km) |
| Southend to Immingham | 147.83 mi (237.91 km) |
| Southend to Ince-in-Makerfield | 195.51 mi (314.65 km) |
| Southend to Inverness | 454.61 mi (731.62 km) |
| Southend to Inverurie | 414.83 mi (667.61 km) |
| Southend to Ipswich | 40.01 mi (64.40 km) |
| Southend to Irlam | 185.71 mi (298.87 km) |
| Southend to Irthlingborough | 77.72 mi (125.08 km) |
| Southend to Irvine | 357.02 mi (574.57 km) |
| Southend to Islington | 34.92 mi (56.20 km) |
