| Hounslow to Borgosatollo | 637.46 mi (1,025.89 km) |
| Hounslow to Borgosesia | 559.47 mi (900.38 km) |
| Hounslow to Boscoreale | 1,022.38 mi (1,645.37 km) |
| Hounslow to Boscotrecase | 1,020.94 mi (1,643.05 km) |
| Hounslow to Botticino Sera | 634.47 mi (1,021.08 km) |
| Hounslow to Bovalino Marina | 1,220.68 mi (1,964.49 km) |
| Hounslow to Boves | 613.81 mi (987.83 km) |
| Hounslow to Boville Ernica | 941.70 mi (1,515.52 km) |
| Hounslow to Bovisio Masciago | 593.45 mi (955.07 km) |
| Hounslow to Bovolone | 679.57 mi (1,093.67 km) |
| Hounslow to Bra | 601.50 mi (968.01 km) |
| Hounslow to Bracciano | 876.16 mi (1,410.05 km) |
| Hounslow to Brandizzo | 574.84 mi (925.12 km) |
| Hounslow to Breganze | 674.43 mi (1,085.39 km) |
| Hounslow to Brembate | 607.74 mi (978.07 km) |
