| Mason City to Rheinbach | 4,383.11 mi (7,053.94 km) |
| Mason City to Rheinberg | 4,333.53 mi (6,974.14 km) |
| Mason City to Rheine | 4,332.21 mi (6,972.02 km) |
| Mason City to Rheinfelden (Baden) | 4,542.34 mi (7,310.19 km) |
| Mason City to Ribnitz-Damgarten | 4,415.12 mi (7,105.45 km) |
| Mason City to Richterich | 4,344.65 mi (6,992.04 km) |
| Mason City to Riedlingen | 4,577.65 mi (7,367.01 km) |
| Mason City to Riegelsberg | 4,438.16 mi (7,142.53 km) |
| Mason City to Rielasingen-Worblingen | 4,573.07 mi (7,359.65 km) |
| Mason City to Riesa | 4,570.68 mi (7,355.81 km) |
| Mason City to Rietberg | 4,386.24 mi (7,058.97 km) |
| Mason City to Rinteln | 4,391.94 mi (7,068.14 km) |
| Mason City to Ritterhude | 4,339.77 mi (6,984.19 km) |
| Mason City to Rodenbach | 4,476.35 mi (7,203.99 km) |
| Mason City to Rodental | 4,540.90 mi (7,307.88 km) |
