| Flensburg to Brandenburg | 206.90 mi (332.98 km) |
| Flensburg to Brandis | 272.11 mi (437.92 km) |
| Flensburg to Braunfels | 297.98 mi (479.55 km) |
| Flensburg to Braunsbedra | 262.46 mi (422.39 km) |
| Flensburg to Braunschweig | 179.35 mi (288.64 km) |
| Flensburg to Breckerfeld | 256.28 mi (412.44 km) |
| Flensburg to Breisach am Rhein | 473.03 mi (761.27 km) |
| Flensburg to Bremen | 120.18 mi (193.42 km) |
| Flensburg to Bremerhaven | 91.85 mi (147.81 km) |
| Flensburg to Bremervorde | 90.56 mi (145.74 km) |
| Flensburg to Bretten | 398.19 mi (640.82 km) |
| Flensburg to Bretzfeld | 386.83 mi (622.54 km) |
| Flensburg to Brieselang | 210.51 mi (338.79 km) |
| Flensburg to Brilon | 236.73 mi (380.98 km) |
| Flensburg to Bruchhausen-Vilsen | 135.81 mi (218.56 km) |
