| Iowa City to Rodgau | 4,491.57 mi (7,228.49 km) |
| Iowa City to Roding | 4,655.39 mi (7,492.12 km) |
| Iowa City to Rodinghausen | 4,388.05 mi (7,061.88 km) |
| Iowa City to Roetgen | 4,369.49 mi (7,032.02 km) |
| Iowa City to Rommerskirchen | 4,372.37 mi (7,036.65 km) |
| Iowa City to Ronnenberg | 4,426.11 mi (7,123.13 km) |
| Iowa City to Rosbach vor der Hohe | 4,473.63 mi (7,199.62 km) |
| Iowa City to Rosdorf | 4,467.56 mi (7,189.85 km) |
| Iowa City to Rosenheim | 4,699.53 mi (7,563.16 km) |
| Iowa City to Rosrath | 4,395.30 mi (7,073.55 km) |
| Iowa City to Rossdorf | 4,493.37 mi (7,231.38 km) |
| Iowa City to Rosstal | 4,588.74 mi (7,384.86 km) |
| Iowa City to Rostock | 4,437.89 mi (7,142.10 km) |
| Iowa City to Rotenburg an der Fulda | 4,481.96 mi (7,213.01 km) |
| Iowa City to Roth | 4,602.63 mi (7,407.21 km) |
