| Iowa City to Rothenbach an der Pegnitz | 4,598.20 mi (7,400.09 km) |
| Iowa City to Rothenburg ob der Tauber | 4,564.30 mi (7,345.53 km) |
| Iowa City to Rottweil | 4,557.37 mi (7,334.38 km) |
| Iowa City to Rudersberg | 4,561.12 mi (7,340.42 km) |
| Iowa City to Rudesheim am Rhein | 4,458.49 mi (7,175.25 km) |
| Iowa City to Rudolstadt | 4,549.52 mi (7,321.74 km) |
| Iowa City to Runkel | 4,449.76 mi (7,161.20 km) |
| Iowa City to Ruppichteroth | 4,408.37 mi (7,094.59 km) |
| Iowa City to Russelsheim | 4,475.45 mi (7,202.53 km) |
| Iowa City to Rutesheim | 4,542.92 mi (7,311.12 km) |
| Iowa City to Ruthen | 4,418.19 mi (7,110.39 km) |
| Iowa City to Saalfeld | 4,553.67 mi (7,328.43 km) |
| Iowa City to Saarbrucken | 4,454.26 mi (7,168.44 km) |
| Iowa City to Saarlouis | 4,441.72 mi (7,148.26 km) |
| Iowa City to Saarwellingen | 4,442.27 mi (7,149.15 km) |
