| Idar-Oberstein to Redon | 451.36 mi (726.39 km) |
| Idar-Oberstein to Reims | 150.36 mi (241.99 km) |
| Idar-Oberstein to Rennes | 422.68 mi (680.24 km) |
| Idar-Oberstein to Revel | 499.90 mi (804.52 km) |
| Idar-Oberstein to Reze | 442.36 mi (711.92 km) |
| Idar-Oberstein to Riedisheim | 135.66 mi (218.32 km) |
| Idar-Oberstein to Rillieux-la-Pape | 291.19 mi (468.63 km) |
| Idar-Oberstein to Riom | 327.89 mi (527.69 km) |
| Idar-Oberstein to Riorges | 295.31 mi (475.26 km) |
| Idar-Oberstein to Ris-Orangis | 232.87 mi (374.77 km) |
| Idar-Oberstein to Rive-de-Gier | 315.00 mi (506.94 km) |
| Idar-Oberstein to Rivesaltes | 524.26 mi (843.72 km) |
| Idar-Oberstein to Rixheim | 135.68 mi (218.36 km) |
| Idar-Oberstein to Roanne | 295.01 mi (474.77 km) |
| Idar-Oberstein to Roche-la-Moliere | 326.69 mi (525.75 km) |
