| Dubuque to Blumberg | 4,496.73 mi (7,236.79 km) |
| Dubuque to Bobenheim-Roxheim | 4,419.07 mi (7,111.80 km) |
| Dubuque to Bobingen | 4,562.84 mi (7,343.18 km) |
| Dubuque to Boblingen | 4,479.61 mi (7,209.24 km) |
| Dubuque to Bocholt | 4,267.57 mi (6,867.99 km) |
| Dubuque to Bochum | 4,302.45 mi (6,924.12 km) |
| Dubuque to Bockenem | 4,383.33 mi (7,054.28 km) |
| Dubuque to Bockhorn | 4,255.78 mi (6,849.01 km) |
| Dubuque to Bogen | 4,602.13 mi (7,406.41 km) |
| Dubuque to Bohl-Iggelheim | 4,425.77 mi (7,122.59 km) |
| Dubuque to Bohmte | 4,306.41 mi (6,930.50 km) |
| Dubuque to Boizenburg | 4,348.34 mi (6,997.98 km) |
| Dubuque to Bonen | 4,317.11 mi (6,947.72 km) |
| Dubuque to Bonn | 4,327.64 mi (6,964.66 km) |
| Dubuque to Bopfingen | 4,521.15 mi (7,276.10 km) |
