| Iowa City to Rockville (Maryland) | 776.30 mi (1,249.33 km) |
| Iowa City to Rockville Centre (New York) | 931.55 mi (1,499.19 km) |
| Iowa City to Rockwall (Texas) | 661.02 mi (1,063.81 km) |
| Iowa City to Rocky Mount (North Carolina) | 835.57 mi (1,344.72 km) |
| Iowa City to Rocky Point (New York) | 964.63 mi (1,552.42 km) |
| Iowa City to Rocky River (Ohio) | 500.22 mi (805.02 km) |
| Iowa City to Roessleville (New York) | 909.21 mi (1,463.23 km) |
| Iowa City to Rogers (Arkansas) | 394.81 mi (635.38 km) |
| Iowa City to Rogers (Minnesota) | 264.68 mi (425.97 km) |
| Iowa City to Rohnert Park (California) | 1,656.13 mi (2,665.28 km) |
| Iowa City to Rolla (Missouri) | 256.63 mi (413.00 km) |
| Iowa City to Rolling Meadows (Illinois) | 182.65 mi (293.94 km) |
| Iowa City to Roma (Texas) | 1,135.44 mi (1,827.32 km) |
| Iowa City to Rome (Georgia) | 616.12 mi (991.56 km) |
| Iowa City to Rome (New York) | 823.70 mi (1,325.61 km) |
