| Boulder to Bunde | 4,935.72 mi (7,943.28 km) |
| Boulder to Burbach | 4,987.18 mi (8,026.09 km) |
| Boulder to Buren | 4,964.98 mi (7,990.37 km) |
| Boulder to Burg | 5,032.30 mi (8,098.71 km) |
| Boulder to Burgau | 5,172.44 mi (8,324.24 km) |
| Boulder to Burgdorf | 4,967.62 mi (7,994.62 km) |
| Boulder to Burghausen | 5,264.11 mi (8,471.77 km) |
| Boulder to Burgkirchen an der Alz | 5,260.37 mi (8,465.75 km) |
| Boulder to Burglengenfeld | 5,187.58 mi (8,348.61 km) |
| Boulder to Burgstadt | 5,127.69 mi (8,252.22 km) |
| Boulder to Burgthann | 5,157.13 mi (8,299.60 km) |
| Boulder to Burladingen | 5,136.37 mi (8,266.19 km) |
| Boulder to Burscheid | 4,939.37 mi (7,949.15 km) |
| Boulder to Burstadt | 5,051.02 mi (8,128.83 km) |
| Boulder to Buttelborn | 5,040.47 mi (8,111.85 km) |
