| Ardahan to Reichenbach/Vogtland | 1,588.85 mi (2,557.01 km) |
| Ardahan to Reinbek | 1,723.63 mi (2,773.91 km) |
| Ardahan to Reinfeld | 1,720.99 mi (2,769.66 km) |
| Ardahan to Reinheim | 1,730.53 mi (2,785.01 km) |
| Ardahan to Reiskirchen | 1,737.97 mi (2,796.99 km) |
| Ardahan to Rellingen | 1,743.37 mi (2,805.68 km) |
| Ardahan to Remagen | 1,807.35 mi (2,908.65 km) |
| Ardahan to Remscheid | 1,814.45 mi (2,920.08 km) |
| Ardahan to Rendsburg | 1,762.25 mi (2,836.08 km) |
| Ardahan to Renningen | 1,717.93 mi (2,764.74 km) |
| Ardahan to Reutlingen | 1,703.41 mi (2,741.38 km) |
| Ardahan to Rhaude | 1,825.32 mi (2,937.56 km) |
| Ardahan to Rheda-Wiedenbruck | 1,775.55 mi (2,857.46 km) |
| Ardahan to Rhede | 1,842.65 mi (2,965.46 km) |
| Ardahan to Rheinau | 1,762.83 mi (2,836.99 km) |
