| Boulogne-sur-Mer to Bressanone | 534.43 mi (860.08 km) |
| Boulogne-sur-Mer to Bresso | 500.07 mi (804.79 km) |
| Boulogne-sur-Mer to Brindisi | 1,047.88 mi (1,686.40 km) |
| Boulogne-sur-Mer to Broni | 527.33 mi (848.66 km) |
| Boulogne-sur-Mer to Bronte | 1,104.41 mi (1,777.37 km) |
| Boulogne-sur-Mer to Brugherio | 502.96 mi (809.44 km) |
| Boulogne-sur-Mer to Brugnera | 601.49 mi (968.01 km) |
| Boulogne-sur-Mer to Bruino | 478.41 mi (769.93 km) |
| Boulogne-sur-Mer to Brunico | 542.16 mi (872.53 km) |
| Boulogne-sur-Mer to Brusciano | 913.61 mi (1,470.31 km) |
| Boulogne-sur-Mer to Bucine | 685.63 mi (1,103.42 km) |
| Boulogne-sur-Mer to Budrio | 627.77 mi (1,010.31 km) |
| Boulogne-sur-Mer to Busca | 507.92 mi (817.42 km) |
| Boulogne-sur-Mer to Bussolengo | 559.35 mi (900.18 km) |
| Boulogne-sur-Mer to Busto Arsizio | 485.44 mi (781.24 km) |
