| Boulder to Brandenburg | 5,045.65 mi (8,120.19 km) |
| Boulder to Brandis | 5,100.83 mi (8,208.99 km) |
| Boulder to Braunfels | 5,007.41 mi (8,058.65 km) |
| Boulder to Braunsbedra | 5,081.67 mi (8,178.16 km) |
| Boulder to Braunschweig | 4,991.91 mi (8,033.70 km) |
| Boulder to Breckerfeld | 4,943.00 mi (7,954.99 km) |
| Boulder to Breisach am Rhein | 5,097.18 mi (8,203.12 km) |
| Boulder to Bremen | 4,900.83 mi (7,887.12 km) |
| Boulder to Bremerhaven | 4,872.56 mi (7,841.63 km) |
| Boulder to Bremervorde | 4,892.39 mi (7,873.55 km) |
| Boulder to Bretten | 5,087.59 mi (8,187.69 km) |
| Boulder to Bretzfeld | 5,104.53 mi (8,214.94 km) |
| Boulder to Brieselang | 5,051.38 mi (8,129.41 km) |
| Boulder to Brilon | 4,972.23 mi (8,002.03 km) |
| Boulder to Bruchhausen-Vilsen | 4,918.62 mi (7,915.76 km) |
