| Watford to Hebburn | 233.77 mi (376.21 km) |
| Watford to Heckmondwike | 151.55 mi (243.90 km) |
| Watford to Hednesford | 99.75 mi (160.53 km) |
| Watford to Helensburgh | 349.26 mi (562.08 km) |
| Watford to Hellesdon | 97.90 mi (157.55 km) |
| Watford to Helston | 238.05 mi (383.11 km) |
| Watford to Hemel Hempstead | 7.44 mi (11.98 km) |
| Watford to Hemsworth | 140.88 mi (226.72 km) |
| Watford to Hendon | 8.82 mi (14.19 km) |
| Watford to Henley on Thames | 23.28 mi (37.47 km) |
| Watford to Hereford | 102.82 mi (165.47 km) |
| Watford to Herne Bay | 68.49 mi (110.23 km) |
| Watford to Hersham | 19.82 mi (31.90 km) |
| Watford to Hertford | 16.77 mi (26.99 km) |
| Watford to Hessle | 142.96 mi (230.06 km) |
