| Iowa City to Boppard | 4,436.31 mi (7,139.55 km) |
| Iowa City to Borgentreich | 4,442.18 mi (7,149.00 km) |
| Iowa City to Borgholzhausen | 4,387.81 mi (7,061.50 km) |
| Iowa City to Borken | 4,347.77 mi (6,997.06 km) |
| Iowa City to Borna | 4,573.39 mi (7,360.17 km) |
| Iowa City to Bornheim | 4,394.38 mi (7,072.07 km) |
| Iowa City to Bosel | 4,340.50 mi (6,985.36 km) |
| Iowa City to Bottrop | 4,361.68 mi (7,019.44 km) |
| Iowa City to Bovenden | 4,464.71 mi (7,185.25 km) |
| Iowa City to Brackenheim | 4,536.18 mi (7,300.27 km) |
| Iowa City to Brake | 4,345.92 mi (6,994.09 km) |
| Iowa City to Brakel | 4,433.84 mi (7,135.58 km) |
| Iowa City to Bramsche | 4,365.03 mi (7,024.84 km) |
| Iowa City to Brand | 4,364.40 mi (7,023.83 km) |
| Iowa City to Brand-Erbisdorf | 4,612.12 mi (7,422.48 km) |
