| Idar-Oberstein to Resana | 354.73 mi (570.88 km) |
| Idar-Oberstein to Rescaldina | 292.97 mi (471.49 km) |
| Idar-Oberstein to Rezzato | 321.88 mi (518.02 km) |
| Idar-Oberstein to Rho | 299.57 mi (482.10 km) |
| Idar-Oberstein to Ribera | 894.05 mi (1,438.83 km) |
| Idar-Oberstein to Riccione Marina | 468.03 mi (753.22 km) |
| Idar-Oberstein to Riesi | 922.37 mi (1,484.41 km) |
| Idar-Oberstein to Rieti | 570.18 mi (917.61 km) |
| Idar-Oberstein to Rignano Flaminio | 575.01 mi (925.38 km) |
| Idar-Oberstein to Rignano sull'Arno | 457.61 mi (736.46 km) |
| Idar-Oberstein to Rimini | 462.43 mi (744.21 km) |
| Idar-Oberstein to Rionero in Vulture | 729.74 mi (1,174.40 km) |
| Idar-Oberstein to Riposto | 915.31 mi (1,473.05 km) |
| Idar-Oberstein to Riva del Garda | 311.22 mi (500.85 km) |
| Idar-Oberstein to Rivalta di Torino | 323.32 mi (520.33 km) |
