| Gaithersburg to Burnley | 3,529.94 mi (5,680.89 km) |
| Gaithersburg to Burntwood | 3,564.32 mi (5,736.22 km) |
| Gaithersburg to Burscough | 3,510.07 mi (5,648.92 km) |
| Gaithersburg to Burslem | 3,546.54 mi (5,707.60 km) |
| Gaithersburg to Burton upon Trent | 3,573.29 mi (5,750.66 km) |
| Gaithersburg to Burtonwood | 3,520.33 mi (5,665.43 km) |
| Gaithersburg to Bury | 3,531.65 mi (5,683.64 km) |
| Gaithersburg to Bury Saint Edmunds | 3,679.26 mi (5,921.20 km) |
| Gaithersburg to Bushey | 3,649.11 mi (5,872.67 km) |
| Gaithersburg to Buxton | 3,553.35 mi (5,718.56 km) |
| Gaithersburg to Caerdydd | 3,537.15 mi (5,692.50 km) |
| Gaithersburg to Caerfyrddin | 3,483.13 mi (5,605.56 km) |
| Gaithersburg to Caernarfon | 3,461.52 mi (5,570.77 km) |
| Gaithersburg to Caerphilly | 3,533.63 mi (5,686.83 km) |
| Gaithersburg to Caister-on-Sea | 3,710.60 mi (5,971.63 km) |
