| Dubuque to Boppard | 4,365.18 mi (7,025.08 km) |
| Dubuque to Borgentreich | 4,370.72 mi (7,033.99 km) |
| Dubuque to Borgholzhausen | 4,316.33 mi (6,946.47 km) |
| Dubuque to Borken | 4,276.42 mi (6,882.23 km) |
| Dubuque to Borna | 4,501.80 mi (7,244.94 km) |
| Dubuque to Bornheim | 4,323.20 mi (6,957.52 km) |
| Dubuque to Bosel | 4,268.92 mi (6,870.16 km) |
| Dubuque to Bottrop | 4,290.37 mi (6,904.69 km) |
| Dubuque to Bovenden | 4,393.20 mi (7,070.17 km) |
| Dubuque to Brackenheim | 4,465.13 mi (7,185.93 km) |
| Dubuque to Brake | 4,274.28 mi (6,878.78 km) |
| Dubuque to Brakel | 4,362.37 mi (7,020.55 km) |
| Dubuque to Bramsche | 4,293.53 mi (6,909.77 km) |
| Dubuque to Brand | 4,293.29 mi (6,909.39 km) |
| Dubuque to Brand-Erbisdorf | 4,540.50 mi (7,307.23 km) |
