| Iowa City to Bixby (Oklahoma) | 458.62 mi (738.07 km) |
| Iowa City to Black Forest (Colorado) | 714.13 mi (1,149.27 km) |
| Iowa City to Blackfoot (Idaho) | 1,064.15 mi (1,712.58 km) |
| Iowa City to Blackhawk (California) | 1,627.00 mi (2,618.41 km) |
| Iowa City to Blacksburg (Virginia) | 665.94 mi (1,071.73 km) |
| Iowa City to Blackwells Mills (New Jersey) | 884.38 mi (1,423.28 km) |
| Iowa City to Blaine (Minnesota) | 256.94 mi (413.51 km) |
| Iowa City to Bloomingdale (Florida) | 1,086.01 mi (1,747.76 km) |
| Iowa City to Bloomingdale (Illinois) | 178.37 mi (287.05 km) |
| Iowa City to Bloomington (California) | 1,498.70 mi (2,411.93 km) |
| Iowa City to Bloomington (Illinois) | 156.30 mi (251.55 km) |
| Iowa City to Bloomington (Indiana) | 314.51 mi (506.16 km) |
| Iowa City to Bloomington (Minnesota) | 237.02 mi (381.44 km) |
| Iowa City to Bloomsburg (Pennsylvania) | 782.41 mi (1,259.17 km) |
| Iowa City to Blue Ash (Ohio) | 410.80 mi (661.12 km) |
