| Iowa City to Barking | 4,111.71 mi (6,617.16 km) |
| Iowa City to Barnet | 4,097.71 mi (6,594.62 km) |
| Iowa City to Barnoldswick | 3,949.83 mi (6,356.63 km) |
| Iowa City to Barnsley | 3,987.08 mi (6,416.58 km) |
| Iowa City to Barnstaple | 3,970.35 mi (6,389.66 km) |
| Iowa City to Barrhead | 3,814.14 mi (6,138.26 km) |
| Iowa City to Barri | 3,990.08 mi (6,421.41 km) |
| Iowa City to Barrow in Furness | 3,906.16 mi (6,286.36 km) |
| Iowa City to Barton upon Humber | 4,020.06 mi (6,469.66 km) |
| Iowa City to Barton upon Irwell | 3,957.54 mi (6,369.04 km) |
| Iowa City to Barwell | 4,024.15 mi (6,476.24 km) |
| Iowa City to Basford | 4,017.17 mi (6,465.01 km) |
| Iowa City to Basildon | 4,125.57 mi (6,639.47 km) |
| Iowa City to Basingstoke | 4,077.31 mi (6,561.80 km) |
| Iowa City to Bath | 4,025.45 mi (6,478.33 km) |
