| Cedar Rapids to Rheinbach | 4,387.35 mi (7,060.76 km) |
| Cedar Rapids to Rheinberg | 4,339.13 mi (6,983.15 km) |
| Cedar Rapids to Rheine | 4,339.79 mi (6,984.22 km) |
| Cedar Rapids to Rheinfelden (Baden) | 4,541.92 mi (7,309.52 km) |
| Cedar Rapids to Ribnitz-Damgarten | 4,430.06 mi (7,129.50 km) |
| Cedar Rapids to Richterich | 4,348.49 mi (6,998.22 km) |
| Cedar Rapids to Riedlingen | 4,579.73 mi (7,370.36 km) |
| Cedar Rapids to Riegelsberg | 4,440.02 mi (7,145.52 km) |
| Cedar Rapids to Rielasingen-Worblingen | 4,573.88 mi (7,360.95 km) |
| Cedar Rapids to Riesa | 4,581.34 mi (7,372.95 km) |
| Cedar Rapids to Rietberg | 4,393.74 mi (7,071.04 km) |
| Cedar Rapids to Rinteln | 4,400.65 mi (7,082.15 km) |
| Cedar Rapids to Ritterhude | 4,350.00 mi (7,000.64 km) |
| Cedar Rapids to Rodenbach | 4,481.46 mi (7,212.21 km) |
| Cedar Rapids to Rodental | 4,547.96 mi (7,319.23 km) |
