| Dubuque to Brandenburg | 4,448.26 mi (7,158.78 km) |
| Dubuque to Brandis | 4,496.31 mi (7,236.11 km) |
| Dubuque to Braunfels | 4,382.27 mi (7,052.58 km) |
| Dubuque to Braunsbedra | 4,474.18 mi (7,200.50 km) |
| Dubuque to Braunschweig | 4,386.16 mi (7,058.85 km) |
| Dubuque to Breckerfeld | 4,319.79 mi (6,952.04 km) |
| Dubuque to Breisach am Rhein | 4,453.33 mi (7,166.94 km) |
| Dubuque to Bremen | 4,294.86 mi (6,911.91 km) |
| Dubuque to Bremerhaven | 4,269.22 mi (6,870.65 km) |
| Dubuque to Bremervorde | 4,290.45 mi (6,904.81 km) |
| Dubuque to Bretten | 4,453.91 mi (7,167.87 km) |
| Dubuque to Bretzfeld | 4,474.33 mi (7,200.73 km) |
| Dubuque to Brieselang | 4,456.87 mi (7,172.64 km) |
| Dubuque to Brilon | 4,353.65 mi (7,006.52 km) |
| Dubuque to Bruchhausen-Vilsen | 4,311.56 mi (6,938.78 km) |
