| Twickenham to Ickenham | 8.93 mi (14.36 km) |
| Twickenham to Ifield | 23.18 mi (37.31 km) |
| Twickenham to Ilford | 19.67 mi (31.65 km) |
| Twickenham to Ilfracombe | 164.15 mi (264.18 km) |
| Twickenham to Ilkeston | 112.92 mi (181.73 km) |
| Twickenham to Ilkley | 182.02 mi (292.93 km) |
| Twickenham to Immingham | 149.66 mi (240.86 km) |
| Twickenham to Ince-in-Makerfield | 172.99 mi (278.39 km) |
| Twickenham to Inverness | 444.67 mi (715.62 km) |
| Twickenham to Inverurie | 411.14 mi (661.67 km) |
| Twickenham to Ipswich | 76.51 mi (123.13 km) |
| Twickenham to Irlam | 163.47 mi (263.08 km) |
| Twickenham to Irthlingborough | 61.60 mi (99.14 km) |
| Twickenham to Irvine | 338.37 mi (544.55 km) |
| Twickenham to Islington | 12.03 mi (19.36 km) |
