| Idar-Oberstein to Rheinberg | 130.59 mi (210.17 km) |
| Idar-Oberstein to Rheine | 177.78 mi (286.11 km) |
| Idar-Oberstein to Rheinfelden (Baden) | 150.17 mi (241.67 km) |
| Idar-Oberstein to Ribnitz-Damgarten | 382.45 mi (615.50 km) |
| Idar-Oberstein to Richterich | 93.80 mi (150.95 km) |
| Idar-Oberstein to Riedlingen | 145.48 mi (234.13 km) |
| Idar-Oberstein to Riegelsberg | 33.39 mi (53.74 km) |
| Idar-Oberstein to Rielasingen-Worblingen | 153.28 mi (246.68 km) |
| Idar-Oberstein to Riesa | 284.90 mi (458.51 km) |
| Idar-Oberstein to Rietberg | 152.38 mi (245.24 km) |
| Idar-Oberstein to Rinteln | 187.78 mi (302.20 km) |
| Idar-Oberstein to Ritterhude | 248.00 mi (399.11 km) |
| Idar-Oberstein to Rodenbach | 82.29 mi (132.43 km) |
| Idar-Oberstein to Rodental | 171.31 mi (275.70 km) |
| Idar-Oberstein to Rodgau | 73.04 mi (117.55 km) |
