| Boulogne-sur-Mer to Borgentreich | 335.84 mi (540.48 km) |
| Boulogne-sur-Mer to Borgholzhausen | 303.19 mi (487.94 km) |
| Boulogne-sur-Mer to Borken | 239.46 mi (385.37 km) |
| Boulogne-sur-Mer to Borna | 474.44 mi (763.54 km) |
| Boulogne-sur-Mer to Bornheim | 235.64 mi (379.22 km) |
| Boulogne-sur-Mer to Bosel | 312.82 mi (503.44 km) |
| Boulogne-sur-Mer to Bottrop | 236.64 mi (380.83 km) |
| Boulogne-sur-Mer to Bovenden | 364.69 mi (586.92 km) |
| Boulogne-sur-Mer to Brackenheim | 350.32 mi (563.79 km) |
| Boulogne-sur-Mer to Brake | 342.85 mi (551.76 km) |
| Boulogne-sur-Mer to Brakel | 334.43 mi (538.21 km) |
| Boulogne-sur-Mer to Bramsche | 296.85 mi (477.73 km) |
| Boulogne-sur-Mer to Brand | 198.95 mi (320.17 km) |
| Boulogne-sur-Mer to Brand-Erbisdorf | 510.83 mi (822.10 km) |
| Boulogne-sur-Mer to Brandenburg | 482.70 mi (776.82 km) |
