| Iowa City to Bitonto | 5,172.48 mi (8,324.31 km) |
| Iowa City to Bitritto | 5,181.35 mi (8,338.58 km) |
| Iowa City to Bollate | 4,684.69 mi (7,539.27 km) |
| Iowa City to Bologna | 4,815.22 mi (7,749.35 km) |
| Iowa City to Bolzano | 4,728.99 mi (7,610.58 km) |
| Iowa City to Bomporto | 4,792.99 mi (7,713.57 km) |
| Iowa City to Bonate di Sopra | 4,696.29 mi (7,557.94 km) |
| Iowa City to Bondeno | 4,801.11 mi (7,726.64 km) |
| Iowa City to Bordighera | 4,702.29 mi (7,567.60 km) |
| Iowa City to Borgaro Torinese | 4,644.67 mi (7,474.87 km) |
| Iowa City to Borgo a Buggiano | 4,818.28 mi (7,754.27 km) |
| Iowa City to Borgo San Dalmazzo | 4,672.06 mi (7,518.96 km) |
| Iowa City to Borgo San Lorenzo | 4,840.50 mi (7,790.03 km) |
| Iowa City to Borgomanero | 4,653.43 mi (7,488.97 km) |
| Iowa City to Borgoricco | 4,794.35 mi (7,715.76 km) |
