| Harpenden to Hetton le Hole | 212.39 mi (341.81 km) |
| Harpenden to Hexham | 229.47 mi (369.29 km) |
| Harpenden to Heysham | 186.82 mi (300.66 km) |
| Harpenden to Heywood | 145.27 mi (233.78 km) |
| Harpenden to High Blantyre | 314.21 mi (505.67 km) |
| Harpenden to High Wycombe | 21.38 mi (34.41 km) |
| Harpenden to Highbury | 21.36 mi (34.37 km) |
| Harpenden to Highgate | 19.18 mi (30.86 km) |
| Harpenden to Hilsea | 74.93 mi (120.60 km) |
| Harpenden to Hinckley | 66.10 mi (106.37 km) |
| Harpenden to Hindley | 150.61 mi (242.38 km) |
| Harpenden to Hipperholme | 145.28 mi (233.80 km) |
| Harpenden to Hitchin | 9.42 mi (15.17 km) |
| Harpenden to Hockley | 44.89 mi (72.24 km) |
| Harpenden to Hoddesdon | 14.98 mi (24.10 km) |
