| Gaithersburg to Bradford | 3,549.28 mi (5,712.02 km) |
| Gaithersburg to Bradford-on-Avon | 3,578.12 mi (5,758.42 km) |
| Gaithersburg to Bradwell | 3,623.00 mi (5,830.66 km) |
| Gaithersburg to Braintree | 3,680.75 mi (5,923.60 km) |
| Gaithersburg to Bramhall | 3,541.43 mi (5,699.38 km) |
| Gaithersburg to Brandon | 3,671.07 mi (5,908.02 km) |
| Gaithersburg to Braunstone | 3,595.54 mi (5,786.46 km) |
| Gaithersburg to Bredbury | 3,542.24 mi (5,700.69 km) |
| Gaithersburg to Brentwood | 3,676.64 mi (5,916.97 km) |
| Gaithersburg to Bridgnorth | 3,547.18 mi (5,708.63 km) |
| Gaithersburg to Bridgwater | 3,552.01 mi (5,716.41 km) |
| Gaithersburg to Bridlington | 3,604.53 mi (5,800.93 km) |
| Gaithersburg to Bridport | 3,569.94 mi (5,745.27 km) |
| Gaithersburg to Brierley Hill | 3,560.16 mi (5,729.53 km) |
| Gaithersburg to Brighouse | 3,549.33 mi (5,712.10 km) |
