| Iowa City to Brandenburg | 4,519.99 mi (7,274.23 km) |
| Iowa City to Brandis | 4,567.94 mi (7,351.39 km) |
| Iowa City to Braunfels | 4,453.51 mi (7,167.23 km) |
| Iowa City to Braunsbedra | 4,545.76 mi (7,315.70 km) |
| Iowa City to Braunschweig | 4,457.79 mi (7,174.12 km) |
| Iowa City to Breckerfeld | 4,391.09 mi (7,066.78 km) |
| Iowa City to Breisach am Rhein | 4,524.02 mi (7,280.71 km) |
| Iowa City to Bremen | 4,366.50 mi (7,027.20 km) |
| Iowa City to Bremerhaven | 4,340.90 mi (6,986.01 km) |
| Iowa City to Bremervorde | 4,362.15 mi (7,020.20 km) |
| Iowa City to Bretten | 4,524.91 mi (7,282.15 km) |
| Iowa City to Bretzfeld | 4,545.42 mi (7,315.15 km) |
| Iowa City to Brieselang | 4,528.64 mi (7,288.15 km) |
| Iowa City to Brilon | 4,425.04 mi (7,121.42 km) |
| Iowa City to Bruchhausen-Vilsen | 4,383.17 mi (7,054.03 km) |
