| Karlovo to Rheinberg | 1,049.71 mi (1,689.34 km) |
| Karlovo to Rheine | 1,045.17 mi (1,682.05 km) |
| Karlovo to Rheinfelden (Baden) | 894.32 mi (1,439.27 km) |
| Karlovo to Ribnitz-Damgarten | 978.25 mi (1,574.35 km) |
| Karlovo to Richterich | 1,047.31 mi (1,685.48 km) |
| Karlovo to Riedlingen | 833.70 mi (1,341.71 km) |
| Karlovo to Riegelsberg | 970.06 mi (1,561.16 km) |
| Karlovo to Rielasingen-Worblingen | 851.28 mi (1,370.01 km) |
| Karlovo to Riesa | 806.20 mi (1,297.46 km) |
| Karlovo to Rietberg | 991.35 mi (1,595.43 km) |
| Karlovo to Rinteln | 983.93 mi (1,583.49 km) |
| Karlovo to Ritterhude | 1,036.18 mi (1,667.57 km) |
| Karlovo to Rodenbach | 910.27 mi (1,464.94 km) |
| Karlovo to Rodental | 838.13 mi (1,348.83 km) |
| Karlovo to Rodgau | 911.77 mi (1,467.35 km) |
