| Iowa City to Cadillac (Michigan) | 357.21 mi (574.88 km) |
| Iowa City to Caguas (Puerto Rico) | 2,207.58 mi (3,552.75 km) |
| Iowa City to Cahokia (Illinois) | 225.17 mi (362.37 km) |
| Iowa City to Calabasas (California) | 1,560.38 mi (2,511.20 km) |
| Iowa City to Caldwell (Idaho) | 1,279.45 mi (2,059.07 km) |
| Iowa City to Caledonia (Wisconsin) | 202.92 mi (326.56 km) |
| Iowa City to Calera (Alabama) | 645.01 mi (1,038.04 km) |
| Iowa City to Calexico (California) | 1,451.17 mi (2,335.43 km) |
| Iowa City to Calhoun (Georgia) | 610.81 mi (983.00 km) |
| Iowa City to California (Maryland) | 827.97 mi (1,332.49 km) |
| Iowa City to California City (California) | 1,488.42 mi (2,395.39 km) |
| Iowa City to Callaway (Florida) | 862.81 mi (1,388.55 km) |
| Iowa City to Calumet City (Illinois) | 205.52 mi (330.75 km) |
| Iowa City to Calverton (Maryland) | 787.38 mi (1,267.17 km) |
| Iowa City to Camano (Washington) | 1,567.49 mi (2,522.64 km) |
