| Ashburn to Bonhill | 3,418.84 mi (5,502.09 km) |
| Ashburn to Bonnyrigg | 3,475.74 mi (5,593.66 km) |
| Ashburn to Bootle | 3,522.27 mi (5,668.55 km) |
| Ashburn to Borehamwood | 3,667.67 mi (5,902.55 km) |
| Ashburn to Boscombe | 3,623.73 mi (5,831.83 km) |
| Ashburn to Boston | 3,649.25 mi (5,872.89 km) |
| Ashburn to Bottesford | 3,611.65 mi (5,812.38 km) |
| Ashburn to Bourne | 3,639.46 mi (5,857.14 km) |
| Ashburn to Bournemouth | 3,622.18 mi (5,829.33 km) |
| Ashburn to Bournville | 3,584.06 mi (5,767.98 km) |
| Ashburn to Bovingdon | 3,655.50 mi (5,882.96 km) |
| Ashburn to Bowdon | 3,548.28 mi (5,710.40 km) |
| Ashburn to Boxley | 3,708.84 mi (5,968.80 km) |
| Ashburn to Brackley | 3,624.12 mi (5,832.46 km) |
| Ashburn to Bracknell | 3,653.58 mi (5,879.87 km) |
