| Round Rock to Bradford | 4,771.24 mi (7,678.57 km) |
| Round Rock to Bradford-on-Avon | 4,820.09 mi (7,757.19 km) |
| Round Rock to Bradwell | 4,857.21 mi (7,816.92 km) |
| Round Rock to Braintree | 4,913.77 mi (7,907.94 km) |
| Round Rock to Bramhall | 4,767.80 mi (7,673.03 km) |
| Round Rock to Brandon | 4,899.58 mi (7,885.11 km) |
| Round Rock to Braunstone | 4,826.09 mi (7,766.84 km) |
| Round Rock to Bredbury | 4,768.01 mi (7,673.36 km) |
| Round Rock to Brentwood | 4,912.04 mi (7,905.16 km) |
| Round Rock to Bridgnorth | 4,780.55 mi (7,693.56 km) |
| Round Rock to Bridgwater | 4,796.79 mi (7,719.69 km) |
| Round Rock to Bridlington | 4,821.23 mi (7,759.01 km) |
| Round Rock to Bridport | 4,817.08 mi (7,752.35 km) |
| Round Rock to Brierley Hill | 4,793.46 mi (7,714.33 km) |
| Round Rock to Brighouse | 4,772.15 mi (7,680.03 km) |
