| Castelo Branco to Bonnyrigg | 1,127.51 mi (1,814.55 km) |
| Castelo Branco to Bootle | 965.19 mi (1,553.33 km) |
| Castelo Branco to Borehamwood | 888.23 mi (1,429.47 km) |
| Castelo Branco to Boscombe | 801.77 mi (1,290.32 km) |
| Castelo Branco to Boston | 975.15 mi (1,569.36 km) |
| Castelo Branco to Bottesford | 1,001.57 mi (1,611.87 km) |
| Castelo Branco to Bourne | 956.16 mi (1,538.79 km) |
| Castelo Branco to Bournemouth | 800.79 mi (1,288.75 km) |
| Castelo Branco to Bournville | 910.63 mi (1,465.52 km) |
| Castelo Branco to Bovingdon | 887.48 mi (1,428.26 km) |
| Castelo Branco to Bowdon | 967.41 mi (1,556.89 km) |
| Castelo Branco to Boxley | 882.58 mi (1,420.38 km) |
| Castelo Branco to Brackley | 896.67 mi (1,443.06 km) |
| Castelo Branco to Bracknell | 864.39 mi (1,391.11 km) |
| Castelo Branco to Bradford | 1,002.86 mi (1,613.95 km) |
