| Boulder to Barmstedt | 4,897.48 mi (7,881.74 km) |
| Boulder to Barntrup | 4,962.02 mi (7,985.59 km) |
| Boulder to Barsbuttel | 4,919.66 mi (7,917.43 km) |
| Boulder to Barsinghausen | 4,958.46 mi (7,979.87 km) |
| Boulder to Barssel | 4,864.32 mi (7,828.37 km) |
| Boulder to Barth | 4,956.17 mi (7,976.19 km) |
| Boulder to Bassum | 4,909.45 mi (7,900.99 km) |
| Boulder to Baunatal | 5,005.58 mi (8,055.70 km) |
| Boulder to Bautzen | 5,163.15 mi (8,309.29 km) |
| Boulder to Bayreuth | 5,136.62 mi (8,266.58 km) |
| Boulder to Bebra | 5,030.95 mi (8,096.54 km) |
| Boulder to Beckingen | 5,004.23 mi (8,053.53 km) |
| Boulder to Beckum | 4,938.76 mi (7,948.17 km) |
| Boulder to Bedburg | 4,878.76 mi (7,851.61 km) |
| Boulder to Bedburg | 4,925.93 mi (7,927.52 km) |
