| Iowa City to Beocin | 5,092.07 mi (8,194.90 km) |
| Iowa City to Blace | 5,239.03 mi (8,431.41 km) |
| Iowa City to Bogatic | 5,100.64 mi (8,208.68 km) |
| Iowa City to Bojnik | 5,267.99 mi (8,478.00 km) |
| Iowa City to Boljevac | 5,236.67 mi (8,427.60 km) |
| Iowa City to Bor | 5,227.06 mi (8,412.14 km) |
| Iowa City to Borca | 5,133.12 mi (8,260.96 km) |
| Iowa City to Bosilegrad | 5,320.15 mi (8,561.95 km) |
| Iowa City to Brus | 5,225.54 mi (8,409.70 km) |
| Iowa City to Bujanovac | 5,296.52 mi (8,523.93 km) |
| Iowa City to Cacak | 5,176.56 mi (8,330.87 km) |
| Iowa City to Cajetina | 5,160.62 mi (8,305.22 km) |
| Iowa City to Cicevac | 5,224.19 mi (8,407.52 km) |
| Iowa City to Coka | 5,071.79 mi (8,162.25 km) |
| Iowa City to Crna Trava | 5,298.71 mi (8,527.44 km) |
