| Iowa City to Cibolo (Texas) | 915.18 mi (1,472.83 km) |
| Iowa City to Cicero (Illinois) | 194.81 mi (313.51 km) |
| Iowa City to Cimarron Hills (Colorado) | 719.94 mi (1,158.63 km) |
| Iowa City to Cincinnati (Ohio) | 408.23 mi (656.99 km) |
| Iowa City to Cinco Ranch (Texas) | 856.57 mi (1,378.52 km) |
| Iowa City to Circleville (Ohio) | 472.26 mi (760.04 km) |
| Iowa City to Citrus (California) | 1,521.55 mi (2,448.70 km) |
| Iowa City to Citrus Heights (California) | 1,576.31 mi (2,536.82 km) |
| Iowa City to Citrus Park (Florida) | 1,065.86 mi (1,715.33 km) |
| Iowa City to Claiborne (Louisiana) | 631.06 mi (1,015.59 km) |
| Iowa City to Claremont (California) | 1,512.44 mi (2,434.04 km) |
| Iowa City to Claremont (New Hampshire) | 982.47 mi (1,581.14 km) |
| Iowa City to Claremore (Oklahoma) | 429.05 mi (690.49 km) |
| Iowa City to Clarksburg (Maryland) | 767.71 mi (1,235.51 km) |
| Iowa City to Clarksburg (West Virginia) | 610.88 mi (983.12 km) |
