| Iowa City to Buena Park (California) | 1,535.80 mi (2,471.63 km) |
| Iowa City to Buenaventura Lakes (Florida) | 1,083.93 mi (1,744.41 km) |
| Iowa City to Buffalo (Minnesota) | 270.14 mi (434.74 km) |
| Iowa City to Buffalo (New York) | 653.34 mi (1,051.45 km) |
| Iowa City to Buffalo Grove (Illinois) | 186.86 mi (300.72 km) |
| Iowa City to Buford (Georgia) | 662.90 mi (1,066.83 km) |
| Iowa City to Bull Run (Virginia) | 764.41 mi (1,230.20 km) |
| Iowa City to Bullhead City (Arizona) | 1,320.83 mi (2,125.67 km) |
| Iowa City to Burbank (California) | 1,541.26 mi (2,480.41 km) |
| Iowa City to Burbank (Illinois) | 194.14 mi (312.43 km) |
| Iowa City to Burien (Washington) | 1,557.70 mi (2,506.88 km) |
| Iowa City to Burkburnett (Texas) | 648.88 mi (1,044.26 km) |
| Iowa City to Burke (Virginia) | 777.54 mi (1,251.32 km) |
| Iowa City to Burke Centre (Virginia) | 775.38 mi (1,247.85 km) |
| Iowa City to Burleson (Texas) | 707.41 mi (1,138.47 km) |
