| Reading to Ickenham | 23.68 mi (38.11 km) |
| Reading to Ifield | 40.22 mi (64.72 km) |
| Reading to Ilford | 46.09 mi (74.18 km) |
| Reading to Ilfracombe | 136.90 mi (220.33 km) |
| Reading to Ilkeston | 105.76 mi (170.21 km) |
| Reading to Ilkley | 174.37 mi (280.63 km) |
| Reading to Immingham | 152.55 mi (245.51 km) |
| Reading to Ince-in-Makerfield | 159.52 mi (256.73 km) |
| Reading to Inverness | 436.06 mi (701.78 km) |
| Reading to Inverurie | 406.46 mi (654.14 km) |
| Reading to Ipswich | 100.18 mi (161.22 km) |
| Reading to Irlam | 150.47 mi (242.15 km) |
| Reading to Irthlingborough | 62.02 mi (99.81 km) |
| Reading to Irvine | 325.14 mi (523.26 km) |
| Reading to Islington | 37.95 mi (61.07 km) |
