| Iowa City to Bound Brook (New Jersey) | 886.29 mi (1,426.35 km) |
| Iowa City to Bountiful (Utah) | 1,055.02 mi (1,697.90 km) |
| Iowa City to Bourbonnais (Illinois) | 192.00 mi (308.99 km) |
| Iowa City to Bowie (Maryland) | 800.21 mi (1,287.82 km) |
| Iowa City to Bowling Green (Kentucky) | 422.75 mi (680.35 km) |
| Iowa City to Bowling Green (Ohio) | 408.02 mi (656.64 km) |
| Iowa City to Box Elder (South Dakota) | 608.35 mi (979.04 km) |
| Iowa City to Boynton Beach (Florida) | 1,230.97 mi (1,981.05 km) |
| Iowa City to Bozeman (Montana) | 1,011.84 mi (1,628.39 km) |
| Iowa City to Bradenton (Florida) | 1,101.87 mi (1,773.29 km) |
| Iowa City to Bradfordville (Florida) | 867.20 mi (1,395.63 km) |
| Iowa City to Bradley (Illinois) | 193.94 mi (312.12 km) |
| Iowa City to Bradley Gardens (New Jersey) | 879.57 mi (1,415.52 km) |
| Iowa City to Brainerd (Minnesota) | 350.67 mi (564.35 km) |
| Iowa City to Brambleton (Virginia) | 759.30 mi (1,221.97 km) |
