| Iowa City to Bollullos par del Condado | 4,348.65 mi (6,998.47 km) |
| Iowa City to Bormujos | 4,369.02 mi (7,031.25 km) |
| Iowa City to Brenes | 4,371.18 mi (7,034.74 km) |
| Iowa City to Brunete | 4,347.36 mi (6,996.41 km) |
| Iowa City to Bueu | 4,066.45 mi (6,544.31 km) |
| Iowa City to Bullas | 4,541.24 mi (7,308.42 km) |
| Iowa City to Bunol | 4,526.02 mi (7,283.92 km) |
| Iowa City to Burela de Cabo | 4,080.99 mi (6,567.72 km) |
| Iowa City to Burgos | 4,287.80 mi (6,900.54 km) |
| Iowa City to Burjasot | 4,539.38 mi (7,305.42 km) |
| Iowa City to Burriana | 4,537.91 mi (7,303.06 km) |
| Iowa City to Cabanaquinta | 4,178.89 mi (6,725.27 km) |
| Iowa City to Cabanillas del Campo | 4,371.71 mi (7,035.59 km) |
| Iowa City to Cabra | 4,439.69 mi (7,144.99 km) |
| Iowa City to Caceres | 4,275.84 mi (6,881.30 km) |
