| Boulder to Bernburg | 5,051.50 mi (8,129.60 km) |
| Boulder to Bersenbruck | 4,898.90 mi (7,884.01 km) |
| Boulder to Besigheim | 5,103.76 mi (8,213.71 km) |
| Boulder to Bestwig | 4,968.24 mi (7,995.61 km) |
| Boulder to Betzdorf | 4,978.37 mi (8,011.91 km) |
| Boulder to Beverstedt | 4,885.10 mi (7,861.81 km) |
| Boulder to Beverungen | 4,985.08 mi (8,022.71 km) |
| Boulder to Bexbach | 5,024.91 mi (8,086.81 km) |
| Boulder to Biberach | 5,167.87 mi (8,316.89 km) |
| Boulder to Biblis | 5,048.66 mi (8,125.03 km) |
| Boulder to Bieber | 5,009.96 mi (8,062.76 km) |
| Boulder to Biedenkopf | 4,993.67 mi (8,036.53 km) |
| Boulder to Bielefeld | 4,942.01 mi (7,953.39 km) |
| Boulder to Bietigheim-Bissingen | 5,104.98 mi (8,215.68 km) |
| Boulder to Billerbeck | 4,904.74 mi (7,893.41 km) |
