| Boulder to Rheinbach | 4,955.39 mi (7,974.93 km) |
| Boulder to Rheinberg | 4,902.23 mi (7,889.38 km) |
| Boulder to Rheine | 4,895.18 mi (7,878.03 km) |
| Boulder to Rheinfelden (Baden) | 5,126.45 mi (8,250.22 km) |
| Boulder to Ribnitz-Damgarten | 4,954.64 mi (7,973.72 km) |
| Boulder to Richterich | 4,918.26 mi (7,915.17 km) |
| Boulder to Riedlingen | 5,154.91 mi (8,296.02 km) |
| Boulder to Riegelsberg | 5,016.71 mi (8,073.62 km) |
| Boulder to Rielasingen-Worblingen | 5,153.80 mi (8,294.24 km) |
| Boulder to Riesa | 5,122.90 mi (8,244.52 km) |
| Boulder to Rietberg | 4,949.11 mi (7,964.82 km) |
| Boulder to Rinteln | 4,951.19 mi (7,968.17 km) |
| Boulder to Ritterhude | 4,894.77 mi (7,877.36 km) |
| Boulder to Rodenbach | 5,045.66 mi (8,120.21 km) |
| Boulder to Rodental | 5,104.21 mi (8,214.44 km) |
