| Rockville to Beyne-Heusay | 3,917.83 mi (6,305.14 km) |
| Rockville to Bierbeek | 3,876.41 mi (6,238.49 km) |
| Rockville to Bilzen | 3,905.78 mi (6,285.74 km) |
| Rockville to Binche | 3,863.34 mi (6,217.44 km) |
| Rockville to Bissegem | 3,813.99 mi (6,138.03 km) |
| Rockville to Blankenberge | 3,797.94 mi (6,112.19 km) |
| Rockville to Blegny | 3,919.85 mi (6,308.39 km) |
| Rockville to Bocholt | 3,900.19 mi (6,276.76 km) |
| Rockville to Boechout | 3,856.79 mi (6,206.90 km) |
| Rockville to Bonheiden | 3,861.80 mi (6,214.97 km) |
| Rockville to Boom | 3,853.80 mi (6,202.10 km) |
| Rockville to Boortmeerbeek | 3,864.44 mi (6,219.22 km) |
| Rockville to Borgerhout | 3,853.49 mi (6,201.59 km) |
| Rockville to Borgloon | 3,900.51 mi (6,277.26 km) |
| Rockville to Bornem | 3,848.00 mi (6,192.76 km) |
