| Gaithersburg to Barmstedt | 3,991.39 mi (6,423.53 km) |
| Gaithersburg to Barntrup | 4,017.23 mi (6,465.10 km) |
| Gaithersburg to Barsbuttel | 4,012.42 mi (6,457.37 km) |
| Gaithersburg to Barsinghausen | 4,022.29 mi (6,473.24 km) |
| Gaithersburg to Barssel | 3,931.75 mi (6,327.54 km) |
| Gaithersburg to Barth | 4,083.49 mi (6,571.75 km) |
| Gaithersburg to Bassum | 3,977.92 mi (6,401.85 km) |
| Gaithersburg to Baunatal | 4,049.82 mi (6,517.56 km) |
| Gaithersburg to Bautzen | 4,246.11 mi (6,833.45 km) |
| Gaithersburg to Bayreuth | 4,174.59 mi (6,718.35 km) |
| Gaithersburg to Bebra | 4,072.87 mi (6,554.65 km) |
| Gaithersburg to Beckingen | 3,994.49 mi (6,428.51 km) |
| Gaithersburg to Beckum | 3,981.70 mi (6,407.94 km) |
| Gaithersburg to Bedburg | 3,908.38 mi (6,289.93 km) |
| Gaithersburg to Bedburg | 3,944.08 mi (6,347.39 km) |
