| Watford to Burnley | 166.57 mi (268.06 km) |
| Watford to Burntwood | 96.01 mi (154.51 km) |
| Watford to Burscough | 168.86 mi (271.75 km) |
| Watford to Burslem | 122.11 mi (196.52 km) |
| Watford to Burton upon Trent | 95.06 mi (152.99 km) |
| Watford to Burtonwood | 155.25 mi (249.85 km) |
| Watford to Bury | 155.86 mi (250.83 km) |
| Watford to Bury Saint Edmunds | 62.65 mi (100.83 km) |
| Watford to Bushey | 1.73 mi (2.78 km) |
| Watford to Buxton | 127.87 mi (205.79 km) |
| Watford to Caerdydd | 120.13 mi (193.34 km) |
| Watford to Caerfyrddin | 168.22 mi (270.73 km) |
| Watford to Caernarfon | 192.85 mi (310.36 km) |
| Watford to Caerphilly | 121.19 mi (195.04 km) |
| Watford to Caister-on-Sea | 113.48 mi (182.63 km) |
