| Boulogne-sur-Mer to Bad Windsheim | 398.84 mi (641.86 km) |
| Boulogne-sur-Mer to Bad Worishofen | 445.34 mi (716.71 km) |
| Boulogne-sur-Mer to Bad Wurzach | 420.51 mi (676.75 km) |
| Boulogne-sur-Mer to Bad Zwischenahn | 320.72 mi (516.14 km) |
| Boulogne-sur-Mer to Baden-Baden | 325.31 mi (523.54 km) |
| Boulogne-sur-Mer to Baesweiler | 199.78 mi (321.51 km) |
| Boulogne-sur-Mer to Baiersbronn | 338.97 mi (545.52 km) |
| Boulogne-sur-Mer to Balingen | 366.05 mi (589.11 km) |
| Boulogne-sur-Mer to Ballenstedt | 421.70 mi (678.66 km) |
| Boulogne-sur-Mer to Balve | 274.80 mi (442.25 km) |
| Boulogne-sur-Mer to Bamberg | 412.91 mi (664.52 km) |
| Boulogne-sur-Mer to Bannewitz | 527.53 mi (848.98 km) |
| Boulogne-sur-Mer to Bargteheide | 420.07 mi (676.04 km) |
| Boulogne-sur-Mer to Barleben | 442.73 mi (712.50 km) |
| Boulogne-sur-Mer to Barmstedt | 403.98 mi (650.14 km) |
