| Sidmouth to Ickenham | 135.37 mi (217.86 km) |
| Sidmouth to Ifield | 135.60 mi (218.22 km) |
| Sidmouth to Ilford | 156.41 mi (251.71 km) |
| Sidmouth to Ilfracombe | 52.93 mi (85.19 km) |
| Sidmouth to Ilkeston | 178.45 mi (287.18 km) |
| Sidmouth to Ilkley | 232.05 mi (373.45 km) |
| Sidmouth to Immingham | 239.73 mi (385.81 km) |
| Sidmouth to Ince-in-Makerfield | 199.48 mi (321.03 km) |
| Sidmouth to Inverness | 471.37 mi (758.59 km) |
| Sidmouth to Inverurie | 457.34 mi (736.02 km) |
| Sidmouth to Ipswich | 212.12 mi (341.38 km) |
| Sidmouth to Irlam | 194.17 mi (312.48 km) |
| Sidmouth to Irthlingborough | 160.13 mi (257.71 km) |
| Sidmouth to Irvine | 346.36 mi (557.41 km) |
| Sidmouth to Islington | 148.55 mi (239.06 km) |
