| Knowle to Ickenham | 79.20 mi (127.47 km) |
| Knowle to Ifield | 109.02 mi (175.45 km) |
| Knowle to Ilford | 96.32 mi (155.01 km) |
| Knowle to Ilfracombe | 130.61 mi (210.20 km) |
| Knowle to Ilkeston | 44.00 mi (70.81 km) |
| Knowle to Ilkley | 106.26 mi (171.00 km) |
| Knowle to Immingham | 105.51 mi (169.80 km) |
| Knowle to Ince-in-Makerfield | 87.40 mi (140.66 km) |
| Knowle to Inverness | 365.26 mi (587.83 km) |
| Knowle to Inverurie | 338.98 mi (545.53 km) |
| Knowle to Ipswich | 124.29 mi (200.03 km) |
| Knowle to Irlam | 78.48 mi (126.30 km) |
| Knowle to Irthlingborough | 47.38 mi (76.25 km) |
| Knowle to Irvine | 252.97 mi (407.11 km) |
| Knowle to Islington | 90.61 mi (145.82 km) |
