| Watertown to Beyne-Heusay | 3,652.68 mi (5,878.42 km) |
| Watertown to Bierbeek | 3,611.43 mi (5,812.03 km) |
| Watertown to Bilzen | 3,639.73 mi (5,857.58 km) |
| Watertown to Binche | 3,600.97 mi (5,795.21 km) |
| Watertown to Bissegem | 3,550.96 mi (5,714.71 km) |
| Watertown to Blankenberge | 3,532.88 mi (5,685.62 km) |
| Watertown to Blegny | 3,654.39 mi (5,881.17 km) |
| Watertown to Bocholt | 3,632.78 mi (5,846.39 km) |
| Watertown to Boechout | 3,590.77 mi (5,778.79 km) |
| Watertown to Bonheiden | 3,596.24 mi (5,787.58 km) |
| Watertown to Boom | 3,588.22 mi (5,774.68 km) |
| Watertown to Boortmeerbeek | 3,599.05 mi (5,792.11 km) |
| Watertown to Borgerhout | 3,587.26 mi (5,773.14 km) |
| Watertown to Borgloon | 3,634.94 mi (5,849.88 km) |
| Watertown to Bornem | 3,582.50 mi (5,765.48 km) |
