| Iowa City to Reidsville (North Carolina) | 734.18 mi (1,181.56 km) |
| Iowa City to Reisterstown (Maryland) | 786.33 mi (1,265.48 km) |
| Iowa City to Rendon (Texas) | 701.08 mi (1,128.29 km) |
| Iowa City to Reno (Nevada) | 1,485.90 mi (2,391.33 km) |
| Iowa City to Renton (Washington) | 1,550.83 mi (2,495.83 km) |
| Iowa City to Republic (Missouri) | 327.96 mi (527.81 km) |
| Iowa City to Reston (Virginia) | 769.45 mi (1,238.31 km) |
| Iowa City to Revere (Massachusetts) | 1,052.08 mi (1,693.16 km) |
| Iowa City to Rexburg (Idaho) | 1,036.35 mi (1,667.85 km) |
| Iowa City to Reynoldsburg (Ohio) | 471.44 mi (758.71 km) |
| Iowa City to Rialto (California) | 1,496.23 mi (2,407.95 km) |
| Iowa City to Richardson (Texas) | 663.76 mi (1,068.22 km) |
| Iowa City to Richfield (Minnesota) | 239.33 mi (385.16 km) |
| Iowa City to Richfield (Wisconsin) | 200.12 mi (322.06 km) |
| Iowa City to Richland (Washington) | 1,409.33 mi (2,268.10 km) |
