| Hemel Hempstead to Ifield | 44.91 mi (72.28 km) |
| Hemel Hempstead to Ilford | 27.34 mi (44.01 km) |
| Hemel Hempstead to Ilfracombe | 161.52 mi (259.94 km) |
| Hemel Hempstead to Ilkeston | 91.34 mi (146.99 km) |
| Hemel Hempstead to Ilkley | 160.36 mi (258.07 km) |
| Hemel Hempstead to Immingham | 129.03 mi (207.66 km) |
| Hemel Hempstead to Ince-in-Makerfield | 152.39 mi (245.24 km) |
| Hemel Hempstead to Inverness | 422.99 mi (680.73 km) |
| Hemel Hempstead to Inverurie | 389.48 mi (626.81 km) |
| Hemel Hempstead to Ipswich | 72.43 mi (116.57 km) |
| Hemel Hempstead to Irlam | 142.78 mi (229.78 km) |
| Hemel Hempstead to Irthlingborough | 39.96 mi (64.30 km) |
| Hemel Hempstead to Irvine | 317.41 mi (510.82 km) |
| Hemel Hempstead to Islington | 21.32 mi (34.31 km) |
| Hemel Hempstead to Iver | 16.08 mi (25.88 km) |
