| Boulogne-sur-Mer to Birkenau | 324.03 mi (521.47 km) |
| Boulogne-sur-Mer to Birkenfeld | 338.23 mi (544.33 km) |
| Boulogne-sur-Mer to Bischofsheim | 301.34 mi (484.97 km) |
| Boulogne-sur-Mer to Bischofswerda | 547.24 mi (880.70 km) |
| Boulogne-sur-Mer to Bisingen | 367.39 mi (591.25 km) |
| Boulogne-sur-Mer to Bissendorf | 300.42 mi (483.47 km) |
| Boulogne-sur-Mer to Bitburg | 223.08 mi (359.02 km) |
| Boulogne-sur-Mer to Bitterfeld | 467.25 mi (751.97 km) |
| Boulogne-sur-Mer to Blankenburg | 410.55 mi (660.71 km) |
| Boulogne-sur-Mer to Blankenfelde | 518.12 mi (833.84 km) |
| Boulogne-sur-Mer to Blaubeuren | 399.22 mi (642.49 km) |
| Boulogne-sur-Mer to Bleicherode | 391.31 mi (629.76 km) |
| Boulogne-sur-Mer to Blieskastel | 270.71 mi (435.67 km) |
| Boulogne-sur-Mer to Blomberg | 332.88 mi (535.71 km) |
| Boulogne-sur-Mer to Blumberg | 369.98 mi (595.43 km) |
