| Iowa City to Clarksdale (Mississippi) | 518.26 mi (834.06 km) |
| Iowa City to Clarkston (Georgia) | 672.05 mi (1,081.56 km) |
| Iowa City to Clarksville (Indiana) | 382.12 mi (614.97 km) |
| Iowa City to Clarksville (Tennessee) | 416.95 mi (671.02 km) |
| Iowa City to Clawson (Michigan) | 433.73 mi (698.02 km) |
| Iowa City to Clay (Alabama) | 612.07 mi (985.03 km) |
| Iowa City to Clayton (California) | 1,625.41 mi (2,615.85 km) |
| Iowa City to Clayton (Missouri) | 217.50 mi (350.04 km) |
| Iowa City to Clayton (North Carolina) | 817.06 mi (1,314.94 km) |
| Iowa City to Clayton (Ohio) | 396.42 mi (637.97 km) |
| Iowa City to Clearfield (Utah) | 1,060.65 mi (1,706.95 km) |
| Iowa City to Clearlake (California) | 1,640.37 mi (2,639.92 km) |
| Iowa City to Clearwater (Florida) | 1,066.45 mi (1,716.28 km) |
| Iowa City to Cleburne (Texas) | 719.43 mi (1,157.81 km) |
| Iowa City to Clemmons (North Carolina) | 713.69 mi (1,148.57 km) |
