| Boulder to Bradford | 4,531.35 mi (7,292.50 km) |
| Boulder to Bradford-on-Avon | 4,612.45 mi (7,423.02 km) |
| Boulder to Bradwell | 4,634.57 mi (7,458.61 km) |
| Boulder to Braintree | 4,687.25 mi (7,543.39 km) |
| Boulder to Bramhall | 4,535.05 mi (7,298.45 km) |
| Boulder to Brandon | 4,665.95 mi (7,509.13 km) |
| Boulder to Braunstone | 4,598.26 mi (7,400.19 km) |
| Boulder to Bredbury | 4,534.27 mi (7,297.20 km) |
| Boulder to Brentwood | 4,689.69 mi (7,547.33 km) |
| Boulder to Bridgnorth | 4,559.01 mi (7,337.01 km) |
| Boulder to Bridgwater | 4,595.11 mi (7,395.12 km) |
| Boulder to Bridlington | 4,571.52 mi (7,357.16 km) |
| Boulder to Bridport | 4,619.24 mi (7,433.95 km) |
| Boulder to Brierley Hill | 4,571.35 mi (7,356.88 km) |
| Boulder to Brighouse | 4,533.58 mi (7,296.09 km) |
