| Gaithersburg to Bingen am Rhein | 4,026.83 mi (6,480.56 km) |
| Gaithersburg to Birkenau | 4,071.30 mi (6,552.13 km) |
| Gaithersburg to Birkenfeld | 4,089.06 mi (6,580.70 km) |
| Gaithersburg to Bischofsheim | 4,044.53 mi (6,509.05 km) |
| Gaithersburg to Bischofswerda | 4,238.50 mi (6,821.20 km) |
| Gaithersburg to Bisingen | 4,117.50 mi (6,626.48 km) |
| Gaithersburg to Bissendorf | 3,973.37 mi (6,394.52 km) |
| Gaithersburg to Bitburg | 3,971.47 mi (6,391.46 km) |
| Gaithersburg to Bitterfeld | 4,151.58 mi (6,681.33 km) |
| Gaithersburg to Blankenburg | 4,094.06 mi (6,588.75 km) |
| Gaithersburg to Blankenfelde | 4,170.04 mi (6,711.04 km) |
| Gaithersburg to Blaubeuren | 4,150.08 mi (6,678.91 km) |
| Gaithersburg to Bleicherode | 4,090.03 mi (6,582.26 km) |
| Gaithersburg to Blieskastel | 4,021.57 mi (6,472.09 km) |
| Gaithersburg to Blomberg | 4,017.35 mi (6,465.30 km) |
