| Boulder to Bingen am Rhein | 5,017.37 mi (8,074.68 km) |
| Boulder to Birkenau | 5,062.83 mi (8,147.84 km) |
| Boulder to Birkenfeld | 5,093.15 mi (8,196.64 km) |
| Boulder to Bischofsheim | 5,031.21 mi (8,096.96 km) |
| Boulder to Bischofswerda | 5,158.53 mi (8,301.85 km) |
| Boulder to Bisingen | 5,128.96 mi (8,254.26 km) |
| Boulder to Bissendorf | 4,920.59 mi (7,918.93 km) |
| Boulder to Bitburg | 4,972.26 mi (8,002.07 km) |
| Boulder to Bitterfeld | 5,078.16 mi (8,172.50 km) |
| Boulder to Blankenburg | 5,028.12 mi (8,091.98 km) |
| Boulder to Blankenfelde | 5,074.68 mi (8,166.90 km) |
| Boulder to Blaubeuren | 5,152.96 mi (8,292.89 km) |
| Boulder to Bleicherode | 5,034.04 mi (8,101.51 km) |
| Boulder to Blieskastel | 5,029.99 mi (8,094.98 km) |
| Boulder to Blomberg | 4,963.31 mi (7,987.67 km) |
