| Harpenden to Houghton le Spring | 213.91 mi (344.25 km) |
| Harpenden to Houghton Regis | 9.47 mi (15.24 km) |
| Harpenden to Hounslow | 24.25 mi (39.03 km) |
| Harpenden to Hove | 68.30 mi (109.91 km) |
| Harpenden to Hoyland Nether | 124.78 mi (200.81 km) |
| Harpenden to Hucclecote | 78.06 mi (125.63 km) |
| Harpenden to Huddersfield | 139.67 mi (224.78 km) |
| Harpenden to Huntingdon | 36.66 mi (59.01 km) |
| Harpenden to Huntington | 153.01 mi (246.25 km) |
| Harpenden to Huyton | 151.70 mi (244.13 km) |
| Harpenden to Hwlffordd | 197.23 mi (317.42 km) |
| Harpenden to Hyde | 133.94 mi (215.56 km) |
| Harpenden to Hythe | 79.59 mi (128.09 km) |
| Harpenden to Hythe | 80.51 mi (129.57 km) |
| Harpenden to Ickenham | 18.40 mi (29.60 km) |
