| Gaithersburg to Beausoleil | 4,196.79 mi (6,754.08 km) |
| Gaithersburg to Beauvais | 3,802.83 mi (6,120.06 km) |
| Gaithersburg to Begles | 3,809.12 mi (6,130.18 km) |
| Gaithersburg to Belfort | 4,051.57 mi (6,520.37 km) |
| Gaithersburg to Bellegarde-sur-Valserine | 4,053.53 mi (6,523.52 km) |
| Gaithersburg to Bellerive-sur-Allier | 3,948.15 mi (6,353.93 km) |
| Gaithersburg to Bellevue | 3,829.35 mi (6,162.75 km) |
| Gaithersburg to Belley | 4,058.01 mi (6,530.73 km) |
| Gaithersburg to Berck-sur-Mer | 3,757.66 mi (6,047.37 km) |
| Gaithersburg to Bergerac | 3,854.23 mi (6,202.78 km) |
| Gaithersburg to Bernay | 3,748.46 mi (6,032.56 km) |
| Gaithersburg to Berre-l'Etang | 4,104.87 mi (6,606.15 km) |
| Gaithersburg to Besancon | 4,028.28 mi (6,482.90 km) |
| Gaithersburg to Bethune | 3,797.71 mi (6,111.83 km) |
| Gaithersburg to Betton | 3,674.59 mi (5,913.67 km) |
