| Iowa City to Blue Island (Illinois) | 198.69 mi (319.76 km) |
| Iowa City to Blue Springs (Missouri) | 232.81 mi (374.67 km) |
| Iowa City to Bluffdale (Utah) | 1,063.75 mi (1,711.95 km) |
| Iowa City to Bluffton (Indiana) | 336.39 mi (541.37 km) |
| Iowa City to Bluffton (South Carolina) | 875.11 mi (1,408.35 km) |
| Iowa City to Blythe (California) | 1,374.27 mi (2,211.67 km) |
| Iowa City to Blytheville (Arkansas) | 405.02 mi (651.82 km) |
| Iowa City to Boca Raton (Florida) | 1,239.42 mi (1,994.65 km) |
| Iowa City to Boerne (Texas) | 913.38 mi (1,469.95 km) |
| Iowa City to Bogalusa (Louisiana) | 757.05 mi (1,218.35 km) |
| Iowa City to Boiling Springs (South Carolina) | 689.53 mi (1,109.69 km) |
| Iowa City to Boise (Idaho) | 1,258.16 mi (2,024.82 km) |
| Iowa City to Bolingbrook (Illinois) | 176.93 mi (284.74 km) |
| Iowa City to Bolivar (Missouri) | 297.28 mi (478.43 km) |
| Iowa City to Bon Air (Virginia) | 795.19 mi (1,279.73 km) |
