| Gaithersburg to Bahce | 5,693.12 mi (9,162.19 km) |
| Gaithersburg to Bahcesaray | 5,883.81 mi (9,469.08 km) |
| Gaithersburg to Balikesir | 5,230.33 mi (8,417.40 km) |
| Gaithersburg to Balya | 5,212.88 mi (8,389.32 km) |
| Gaithersburg to Banaz | 5,346.90 mi (8,605.00 km) |
| Gaithersburg to Bandirma | 5,202.35 mi (8,372.38 km) |
| Gaithersburg to Bartin | 5,318.70 mi (8,559.63 km) |
| Gaithersburg to Baskale | 5,931.94 mi (9,546.53 km) |
| Gaithersburg to Baskil | 5,713.07 mi (9,194.30 km) |
| Gaithersburg to Basmakci | 5,395.43 mi (8,683.11 km) |
| Gaithersburg to Batman | 5,834.03 mi (9,388.96 km) |
| Gaithersburg to Battalgazi | 5,702.86 mi (9,177.87 km) |
| Gaithersburg to Bayat | 5,438.77 mi (8,752.86 km) |
| Gaithersburg to Bayburt | 5,681.93 mi (9,144.19 km) |
| Gaithersburg to Bayindir | 5,282.68 mi (8,501.64 km) |
