| Iowa City to River Ridge (Louisiana) | 811.45 mi (1,305.91 km) |
| Iowa City to Riverbank (California) | 1,579.28 mi (2,541.60 km) |
| Iowa City to Riverdale (Georgia) | 680.95 mi (1,095.89 km) |
| Iowa City to Riverdale (Illinois) | 201.01 mi (323.49 km) |
| Iowa City to Riverside (California) | 1,502.37 mi (2,417.83 km) |
| Iowa City to Riverside (Ohio) | 408.79 mi (657.89 km) |
| Iowa City to Riverton (Utah) | 1,064.50 mi (1,713.15 km) |
| Iowa City to Riverton (Wyoming) | 865.98 mi (1,393.67 km) |
| Iowa City to Riverview (Florida) | 1,088.38 mi (1,751.58 km) |
| Iowa City to Riverview (Michigan) | 429.89 mi (691.85 km) |
| Iowa City to Riviera Beach (Florida) | 1,215.91 mi (1,956.81 km) |
| Iowa City to Riviera Beach (Maryland) | 806.85 mi (1,298.51 km) |
| Iowa City to Roanoke (Virginia) | 686.58 mi (1,104.94 km) |
| Iowa City to Roanoke Rapids (North Carolina) | 825.94 mi (1,329.22 km) |
| Iowa City to Robbinsdale (Minnesota) | 249.84 mi (402.08 km) |
