| Iowa City to Brownhills | 3,999.89 mi (6,437.20 km) |
| Iowa City to Broxbourne | 4,100.73 mi (6,599.49 km) |
| Iowa City to Broxburn | 3,842.54 mi (6,183.97 km) |
| Iowa City to Bryn | 3,945.96 mi (6,350.40 km) |
| Iowa City to Buckhurst Hill | 4,106.91 mi (6,609.43 km) |
| Iowa City to Buckie | 3,809.38 mi (6,130.60 km) |
| Iowa City to Buckingham | 4,056.56 mi (6,528.41 km) |
| Iowa City to Buckley | 3,940.51 mi (6,341.64 km) |
| Iowa City to Bucksburn | 3,850.54 mi (6,196.85 km) |
| Iowa City to Bude | 3,959.97 mi (6,372.95 km) |
| Iowa City to Bulwell | 4,015.39 mi (6,462.15 km) |
| Iowa City to Burbage | 4,025.41 mi (6,478.27 km) |
| Iowa City to Burgess Hill | 4,124.26 mi (6,637.35 km) |
| Iowa City to Burnham | 4,084.09 mi (6,572.70 km) |
| Iowa City to Burnham-on-Sea | 4,006.06 mi (6,447.13 km) |
