| Idar-Oberstein to Pyskowice | 503.18 mi (809.78 km) |
| Idar-Oberstein to Raciborz | 486.27 mi (782.58 km) |
| Idar-Oberstein to Radom | 617.83 mi (994.30 km) |
| Idar-Oberstein to Radomsko | 542.14 mi (872.49 km) |
| Idar-Oberstein to Radzionkow Nowy | 514.92 mi (828.69 km) |
| Idar-Oberstein to Radzymin | 629.46 mi (1,013.01 km) |
| Idar-Oberstein to Radzyn Podlaski | 683.14 mi (1,099.41 km) |
| Idar-Oberstein to Rawa Mazowiecka | 582.50 mi (937.44 km) |
| Idar-Oberstein to Rawicz | 437.75 mi (704.48 km) |
| Idar-Oberstein to Reda | 576.59 mi (927.93 km) |
| Idar-Oberstein to Rogozno | 468.20 mi (753.49 km) |
| Idar-Oberstein to Ropczyce | 636.29 mi (1,024.01 km) |
| Idar-Oberstein to Ruda Slaska | 513.57 mi (826.52 km) |
| Idar-Oberstein to Rumia | 576.51 mi (927.80 km) |
| Idar-Oberstein to Rury | 675.53 mi (1,087.17 km) |
