| Thornton Heath to Bonhill | 365.25 mi (587.81 km) |
| Thornton Heath to Bonnyrigg | 332.53 mi (535.15 km) |
| Thornton Heath to Bootle | 186.26 mi (299.76 km) |
| Thornton Heath to Borehamwood | 19.14 mi (30.80 km) |
| Thornton Heath to Boscombe | 88.48 mi (142.39 km) |
| Thornton Heath to Boston | 108.80 mi (175.10 km) |
| Thornton Heath to Bottesford | 150.56 mi (242.30 km) |
| Thornton Heath to Bourne | 95.22 mi (153.24 km) |
| Thornton Heath to Bournemouth | 90.14 mi (145.07 km) |
| Thornton Heath to Bournville | 105.46 mi (169.73 km) |
| Thornton Heath to Bovingdon | 28.91 mi (46.53 km) |
| Thornton Heath to Bowdon | 166.41 mi (267.81 km) |
| Thornton Heath to Boxley | 28.91 mi (46.53 km) |
| Thornton Heath to Brackley | 62.30 mi (100.26 km) |
| Thornton Heath to Bracknell | 27.62 mi (44.45 km) |
