| Cities | Distance |
|---|---|
| Watford to Amersham | 9.01 mi (14.50 km) |
| Watford to Amesbury | 68.32 mi (109.95 km) |
| Watford to Ammanford | 154.26 mi (248.26 km) |
| Watford to Ampthill | 25.97 mi (41.80 km) |
| Watford to Andover | 55.99 mi (90.11 km) |
| Watford to Annan | 258.61 mi (416.20 km) |
| Watford to Antrim | 320.17 mi (515.26 km) |
| Watford to Appleton | 147.95 mi (238.10 km) |
| Watford to Appley Bridge | 164.87 mi (265.32 km) |
| Watford to Arbroath | 350.34 mi (563.82 km) |
| Watford to Ardrossan | 329.41 mi (530.14 km) |
| Watford to Armadale | 322.69 mi (519.33 km) |
| Watford to Armthorpe | 132.80 mi (213.72 km) |
| Watford to Arnold | 98.25 mi (158.12 km) |
| Watford to Ascot | 20.74 mi (33.37 km) |