| Walthamstow to Ickenham | 18.44 mi (29.68 km) |
| Walthamstow to Ifield | 32.82 mi (52.83 km) |
| Walthamstow to Ilford | 4.94 mi (7.95 km) |
| Walthamstow to Ilfracombe | 178.58 mi (287.40 km) |
| Walthamstow to Ilkeston | 110.22 mi (177.38 km) |
| Walthamstow to Ilkley | 178.41 mi (287.12 km) |
| Walthamstow to Immingham | 140.50 mi (226.11 km) |
| Walthamstow to Ince-in-Makerfield | 173.16 mi (278.68 km) |
| Walthamstow to Inverness | 440.51 mi (708.94 km) |
| Walthamstow to Inverurie | 404.75 mi (651.38 km) |
| Walthamstow to Ipswich | 60.03 mi (96.61 km) |
| Walthamstow to Irlam | 163.46 mi (263.06 km) |
| Walthamstow to Irthlingborough | 57.02 mi (91.77 km) |
| Walthamstow to Irvine | 337.42 mi (543.03 km) |
| Walthamstow to Islington | 4.47 mi (7.19 km) |
