| Castle Rock to Bradford | 4,552.76 mi (7,326.96 km) |
| Castle Rock to Bradford-on-Avon | 4,631.99 mi (7,454.46 km) |
| Castle Rock to Bradwell | 4,655.05 mi (7,491.57 km) |
| Castle Rock to Braintree | 4,708.02 mi (7,576.83 km) |
| Castle Rock to Bramhall | 4,556.03 mi (7,332.22 km) |
| Castle Rock to Brandon | 4,687.14 mi (7,543.22 km) |
| Castle Rock to Braunstone | 4,619.02 mi (7,433.59 km) |
| Castle Rock to Bredbury | 4,555.31 mi (7,331.06 km) |
| Castle Rock to Brentwood | 4,710.22 mi (7,580.37 km) |
| Castle Rock to Bridgnorth | 4,579.33 mi (7,369.72 km) |
| Castle Rock to Bridgwater | 4,614.26 mi (7,425.93 km) |
| Castle Rock to Bridlington | 4,593.58 mi (7,392.65 km) |
| Castle Rock to Bridport | 4,638.18 mi (7,464.44 km) |
| Castle Rock to Brierley Hill | 4,591.72 mi (7,389.66 km) |
| Castle Rock to Brighouse | 4,554.91 mi (7,330.42 km) |
