| Gaithersburg to Beuvry | 3,799.56 mi (6,114.80 km) |
| Gaithersburg to Beziers | 4,021.08 mi (6,471.30 km) |
| Gaithersburg to Bezons | 3,820.88 mi (6,149.12 km) |
| Gaithersburg to Biarritz | 3,799.26 mi (6,114.32 km) |
| Gaithersburg to Biganos | 3,794.11 mi (6,106.03 km) |
| Gaithersburg to Billere | 3,857.63 mi (6,208.26 km) |
| Gaithersburg to Biot | 4,185.91 mi (6,736.57 km) |
| Gaithersburg to Biscarrosse | 3,792.48 mi (6,103.40 km) |
| Gaithersburg to Bischheim | 4,060.33 mi (6,534.47 km) |
| Gaithersburg to Bischwiller | 4,060.15 mi (6,534.17 km) |
| Gaithersburg to Blagnac | 3,929.70 mi (6,324.24 km) |
| Gaithersburg to Blain | 3,686.43 mi (5,932.73 km) |
| Gaithersburg to Blanquefort | 3,802.32 mi (6,119.24 km) |
| Gaithersburg to Blois | 3,817.65 mi (6,143.91 km) |
| Gaithersburg to Bobigny | 3,830.63 mi (6,164.80 km) |
