| Gaithersburg to Bargas | 3,782.89 mi (6,087.97 km) |
| Gaithersburg to Bayona | 3,492.50 mi (5,620.64 km) |
| Gaithersburg to Baza | 3,917.16 mi (6,304.06 km) |
| Gaithersburg to Beasain | 3,782.12 mi (6,086.74 km) |
| Gaithersburg to Bejar | 3,686.16 mi (5,932.30 km) |
| Gaithersburg to Benaguacil | 3,957.83 mi (6,369.51 km) |
| Gaithersburg to Benahavis | 3,834.31 mi (6,170.72 km) |
| Gaithersburg to Benalmadena | 3,858.09 mi (6,209.00 km) |
| Gaithersburg to Benavente | 3,646.79 mi (5,868.94 km) |
| Gaithersburg to Benetuser | 3,972.08 mi (6,392.45 km) |
| Gaithersburg to Beniajan | 3,984.52 mi (6,412.46 km) |
| Gaithersburg to Benicarlo | 3,980.32 mi (6,405.71 km) |
| Gaithersburg to Benicasim | 3,974.68 mi (6,396.63 km) |
| Gaithersburg to Beniel | 3,985.71 mi (6,414.38 km) |
| Gaithersburg to Benifayo | 3,974.87 mi (6,396.93 km) |
