| Leighton Buzzard to Bougival | 244.25 mi (393.08 km) |
| Leighton Buzzard to Bouguenais | 330.24 mi (531.47 km) |
| Leighton Buzzard to Boulogne-Billancourt | 248.32 mi (399.62 km) |
| Leighton Buzzard to Boulogne-sur-Mer | 128.14 mi (206.23 km) |
| Leighton Buzzard to Bourg-de-Peage | 542.12 mi (872.46 km) |
| Leighton Buzzard to Bourg-en-Bresse | 475.91 mi (765.90 km) |
| Leighton Buzzard to Bourg-la-Reine | 253.33 mi (407.70 km) |
| Leighton Buzzard to Bourg-les-Valence | 544.37 mi (876.08 km) |
| Leighton Buzzard to Bourges | 360.88 mi (580.79 km) |
| Leighton Buzzard to Bourgoin-Jallieu | 513.82 mi (826.92 km) |
| Leighton Buzzard to Bressuire | 350.84 mi (564.62 km) |
| Leighton Buzzard to Brest | 296.71 mi (477.51 km) |
| Leighton Buzzard to Bretigny-sur-Orge | 263.25 mi (423.66 km) |
| Leighton Buzzard to Breuillet | 263.13 mi (423.46 km) |
| Leighton Buzzard to Briancon | 588.69 mi (947.41 km) |
