| Watford to Blumberg | 477.45 mi (768.39 km) |
| Watford to Bobenheim-Roxheim | 409.36 mi (658.81 km) |
| Watford to Bobingen | 549.85 mi (884.90 km) |
| Watford to Boblingen | 463.80 mi (746.42 km) |
| Watford to Bocholt | 300.13 mi (483.02 km) |
| Watford to Bochum | 326.96 mi (526.19 km) |
| Watford to Bockenem | 449.77 mi (723.83 km) |
| Watford to Bockhorn | 373.34 mi (600.83 km) |
| Watford to Bogen | 606.63 mi (976.28 km) |
| Watford to Bohl-Iggelheim | 413.38 mi (665.26 km) |
| Watford to Bohmte | 373.53 mi (601.14 km) |
| Watford to Boizenburg | 481.47 mi (774.85 km) |
| Watford to Bonen | 349.62 mi (562.66 km) |
| Watford to Bonn | 330.59 mi (532.04 km) |
| Watford to Bopfingen | 512.03 mi (824.03 km) |
