| London Colney to Bonhill | 341.54 mi (549.66 km) |
| London Colney to Bonnyrigg | 308.56 mi (496.58 km) |
| London Colney to Bootle | 163.87 mi (263.73 km) |
| London Colney to Borehamwood | 4.86 mi (7.82 km) |
| London Colney to Boscombe | 96.04 mi (154.56 km) |
| London Colney to Boston | 87.03 mi (140.06 km) |
| London Colney to Bottesford | 127.13 mi (204.59 km) |
| London Colney to Bourne | 72.10 mi (116.03 km) |
| London Colney to Bournemouth | 97.49 mi (156.90 km) |
| London Colney to Bournville | 84.78 mi (136.44 km) |
| London Colney to Bovingdon | 10.13 mi (16.31 km) |
| London Colney to Bowdon | 143.27 mi (230.58 km) |
| London Colney to Boxley | 46.58 mi (74.97 km) |
| London Colney to Brackley | 41.86 mi (67.36 km) |
| London Colney to Bracknell | 28.82 mi (46.38 km) |
