| Boulogne-sur-Mer to Barntrup | 334.97 mi (539.08 km) |
| Boulogne-sur-Mer to Barsbuttel | 411.91 mi (662.91 km) |
| Boulogne-sur-Mer to Barsinghausen | 355.08 mi (571.45 km) |
| Boulogne-sur-Mer to Barssel | 310.82 mi (500.21 km) |
| Boulogne-sur-Mer to Barth | 529.13 mi (851.56 km) |
| Boulogne-sur-Mer to Bassum | 337.30 mi (542.84 km) |
| Boulogne-sur-Mer to Baunatal | 341.19 mi (549.10 km) |
| Boulogne-sur-Mer to Bautzen | 557.71 mi (897.55 km) |
| Boulogne-sur-Mer to Bayreuth | 442.33 mi (711.86 km) |
| Boulogne-sur-Mer to Bebra | 356.86 mi (574.32 km) |
| Boulogne-sur-Mer to Beckingen | 243.63 mi (392.09 km) |
| Boulogne-sur-Mer to Beckum | 286.78 mi (461.53 km) |
| Boulogne-sur-Mer to Bedburg | 210.22 mi (338.31 km) |
| Boulogne-sur-Mer to Bedburg | 216.56 mi (348.52 km) |
| Boulogne-sur-Mer to Beelitz | 498.90 mi (802.90 km) |
