| Castelo Branco to Bradford-on-Avon | 835.57 mi (1,344.73 km) |
| Castelo Branco to Bradwell | 903.75 mi (1,454.44 km) |
| Castelo Branco to Braintree | 917.68 mi (1,476.86 km) |
| Castelo Branco to Bramhall | 968.56 mi (1,558.75 km) |
| Castelo Branco to Brandon | 954.03 mi (1,535.37 km) |
| Castelo Branco to Braunstone | 933.72 mi (1,502.67 km) |
| Castelo Branco to Bredbury | 973.34 mi (1,566.44 km) |
| Castelo Branco to Brentwood | 897.02 mi (1,443.62 km) |
| Castelo Branco to Bridgnorth | 911.17 mi (1,466.38 km) |
| Castelo Branco to Bridgwater | 811.07 mi (1,305.29 km) |
| Castelo Branco to Bridlington | 1,042.81 mi (1,678.24 km) |
| Castelo Branco to Bridport | 788.31 mi (1,268.66 km) |
| Castelo Branco to Brierley Hill | 911.32 mi (1,466.63 km) |
| Castelo Branco to Brighouse | 996.20 mi (1,603.22 km) |
| Castelo Branco to Brighton | 839.24 mi (1,350.63 km) |
