| Idar-Oberstein to Rosemont (California) | 5,584.81 mi (8,987.88 km) |
| Idar-Oberstein to Rosemount (Minnesota) | 4,351.74 mi (7,003.45 km) |
| Idar-Oberstein to Rosenberg (Texas) | 5,225.02 mi (8,408.86 km) |
| Idar-Oberstein to Roseville (California) | 5,570.61 mi (8,965.04 km) |
| Idar-Oberstein to Roseville (Michigan) | 4,084.38 mi (6,573.18 km) |
| Idar-Oberstein to Roseville (Minnesota) | 4,341.83 mi (6,987.50 km) |
| Idar-Oberstein to Rossmoor (California) | 5,770.30 mi (9,286.40 km) |
| Idar-Oberstein to Rossville (Maryland) | 3,970.44 mi (6,389.80 km) |
| Idar-Oberstein to Roswell (Georgia) | 4,539.85 mi (7,306.18 km) |
| Idar-Oberstein to Roswell (New Mexico) | 5,345.60 mi (8,602.92 km) |
| Idar-Oberstein to Round Lake (Illinois) | 4,287.40 mi (6,899.91 km) |
| Idar-Oberstein to Round Lake Beach (Illinois) | 4,284.80 mi (6,895.72 km) |
| Idar-Oberstein to Round Rock (Texas) | 5,244.62 mi (8,440.40 km) |
| Idar-Oberstein to Rowland Heights (California) | 5,753.83 mi (9,259.89 km) |
| Idar-Oberstein to Rowlett (Texas) | 5,076.56 mi (8,169.94 km) |
