| Boulogne-Billancourt to Borgosesia | 355.09 mi (571.46 km) |
| Boulogne-Billancourt to Boscoreale | 817.30 mi (1,315.31 km) |
| Boulogne-Billancourt to Boscotrecase | 815.87 mi (1,313.01 km) |
| Boulogne-Billancourt to Botticino Sera | 438.87 mi (706.30 km) |
| Boulogne-Billancourt to Bovalino Marina | 1,012.88 mi (1,630.07 km) |
| Boulogne-Billancourt to Boves | 400.18 mi (644.03 km) |
| Boulogne-Billancourt to Boville Ernica | 736.65 mi (1,185.52 km) |
| Boulogne-Billancourt to Bovisio Masciago | 392.88 mi (632.28 km) |
| Boulogne-Billancourt to Bovolone | 486.02 mi (782.18 km) |
| Boulogne-Billancourt to Bra | 389.79 mi (627.31 km) |
| Boulogne-Billancourt to Bracciano | 668.78 mi (1,076.30 km) |
| Boulogne-Billancourt to Brandizzo | 365.12 mi (587.60 km) |
| Boulogne-Billancourt to Breganze | 487.50 mi (784.56 km) |
| Boulogne-Billancourt to Brembate | 409.14 mi (658.45 km) |
| Boulogne-Billancourt to Brescia | 438.14 mi (705.11 km) |
