| Iowa City to Brescia | 4,727.34 mi (7,607.91 km) |
| Iowa City to Bressanone | 4,730.86 mi (7,613.58 km) |
| Iowa City to Bresso | 4,687.94 mi (7,544.52 km) |
| Iowa City to Brindisi | 5,243.01 mi (8,437.81 km) |
| Iowa City to Broni | 4,710.84 mi (7,581.36 km) |
| Iowa City to Bronte | 5,255.44 mi (8,457.81 km) |
| Iowa City to Brugherio | 4,691.72 mi (7,550.60 km) |
| Iowa City to Brugnera | 4,798.81 mi (7,722.93 km) |
| Iowa City to Bruino | 4,643.03 mi (7,472.24 km) |
| Iowa City to Brunico | 4,737.68 mi (7,624.57 km) |
| Iowa City to Brusciano | 5,094.09 mi (8,198.15 km) |
| Iowa City to Bucine | 4,869.95 mi (7,837.43 km) |
| Iowa City to Budrio | 4,820.06 mi (7,757.14 km) |
| Iowa City to Busca | 4,663.78 mi (7,505.63 km) |
| Iowa City to Bussolengo | 4,754.36 mi (7,651.40 km) |
