| London Colney to Ayr | 312.93 mi (503.61 km) |
| London Colney to Bacup | 158.09 mi (254.41 km) |
| London Colney to Baguley | 142.29 mi (228.99 km) |
| London Colney to Baildon | 159.03 mi (255.94 km) |
| London Colney to Bailleston | 324.44 mi (522.14 km) |
| London Colney to Balderton | 93.96 mi (151.21 km) |
| London Colney to Baldock | 18.83 mi (30.31 km) |
| London Colney to Balham | 20.53 mi (33.03 km) |
| London Colney to Bamber Bridge | 169.96 mi (273.52 km) |
| London Colney to Banbridge | 306.45 mi (493.18 km) |
| London Colney to Banbury | 49.87 mi (80.26 km) |
| London Colney to Bangor | 300.69 mi (483.92 km) |
| London Colney to Bangor | 191.59 mi (308.33 km) |
| London Colney to Banstead | 28.22 mi (45.41 km) |
| London Colney to Bargoed | 125.89 mi (202.60 km) |
