| Ardahan to Rodgau | 1,729.93 mi (2,784.05 km) |
| Ardahan to Roding | 1,560.64 mi (2,511.61 km) |
| Ardahan to Rodinghausen | 1,773.67 mi (2,854.44 km) |
| Ardahan to Roetgen | 1,852.80 mi (2,981.79 km) |
| Ardahan to Rommerskirchen | 1,834.84 mi (2,952.88 km) |
| Ardahan to Ronnenberg | 1,726.25 mi (2,778.13 km) |
| Ardahan to Rosbach vor der Hohe | 1,740.64 mi (2,801.29 km) |
| Ardahan to Rosdorf | 1,703.66 mi (2,741.78 km) |
| Ardahan to Rosenheim | 1,565.52 mi (2,519.46 km) |
| Ardahan to Rosrath | 1,812.36 mi (2,916.71 km) |
| Ardahan to Rossdorf | 1,734.13 mi (2,790.81 km) |
| Ardahan to Rosstal | 1,635.48 mi (2,632.06 km) |
| Ardahan to Rostock | 1,663.03 mi (2,676.38 km) |
| Ardahan to Rotenburg an der Fulda | 1,704.14 mi (2,742.54 km) |
| Ardahan to Roth | 1,624.69 mi (2,614.69 km) |
