| Iowa City to Blumberg | 4,567.48 mi (7,350.66 km) |
| Iowa City to Bobenheim-Roxheim | 4,490.15 mi (7,226.19 km) |
| Iowa City to Bobingen | 4,633.90 mi (7,457.54 km) |
| Iowa City to Boblingen | 4,550.58 mi (7,323.45 km) |
| Iowa City to Bocholt | 4,338.90 mi (6,982.79 km) |
| Iowa City to Bochum | 4,373.77 mi (7,038.90 km) |
| Iowa City to Bockenem | 4,454.90 mi (7,169.47 km) |
| Iowa City to Bockhorn | 4,327.41 mi (6,964.30 km) |
| Iowa City to Bogen | 4,673.45 mi (7,521.19 km) |
| Iowa City to Bohl-Iggelheim | 4,496.80 mi (7,236.91 km) |
| Iowa City to Bohmte | 4,377.93 mi (7,045.60 km) |
| Iowa City to Boizenburg | 4,420.10 mi (7,113.46 km) |
| Iowa City to Bonen | 4,388.48 mi (7,062.58 km) |
| Iowa City to Bonn | 4,398.82 mi (7,079.22 km) |
| Iowa City to Bopfingen | 4,592.27 mi (7,390.55 km) |
