| Cities | Distance |
|---|---|
| Watford to Hoddesdon | 17.81 mi (28.67 km) |
| Watford to Holbeach | 81.25 mi (130.76 km) |
| Watford to Holborn | 15.27 mi (24.57 km) |
| Watford to Hollinwood | 148.18 mi (238.47 km) |
| Watford to Holyhead | 211.73 mi (340.74 km) |
| Watford to Holywell | 163.31 mi (262.82 km) |
| Watford to Honiton | 134.55 mi (216.54 km) |
| Watford to Horbury | 146.79 mi (236.24 km) |
| Watford to Horley | 34.60 mi (55.69 km) |
| Watford to Hornchurch | 26.98 mi (43.43 km) |
| Watford to Horndean | 57.42 mi (92.41 km) |
| Watford to Hornsey | 12.81 mi (20.61 km) |
| Watford to Horsell | 23.66 mi (38.07 km) |
| Watford to Horsforth | 159.53 mi (256.73 km) |
| Watford to Horsham | 41.09 mi (66.12 km) |