| Middlesex to Bonhill | 3,231.54 mi (5,200.66 km) |
| Middlesex to Bonnyrigg | 3,288.50 mi (5,292.32 km) |
| Middlesex to Bootle | 3,333.43 mi (5,364.63 km) |
| Middlesex to Borehamwood | 3,478.21 mi (5,597.65 km) |
| Middlesex to Boscombe | 3,433.82 mi (5,526.20 km) |
| Middlesex to Boston | 3,460.43 mi (5,569.02 km) |
| Middlesex to Bottesford | 3,423.08 mi (5,508.92 km) |
| Middlesex to Bourne | 3,450.50 mi (5,553.04 km) |
| Middlesex to Bournemouth | 3,432.26 mi (5,523.69 km) |
| Middlesex to Bournville | 3,394.79 mi (5,463.39 km) |
| Middlesex to Bovingdon | 3,466.05 mi (5,578.06 km) |
| Middlesex to Bowdon | 3,359.45 mi (5,406.51 km) |
| Middlesex to Boxley | 3,519.31 mi (5,663.78 km) |
| Middlesex to Brackley | 3,434.75 mi (5,527.69 km) |
| Middlesex to Bracknell | 3,463.98 mi (5,574.74 km) |
