| Boulder to Reichenbach/Vogtland | 5,126.52 mi (8,250.34 km) |
| Boulder to Reinbek | 4,924.84 mi (7,925.76 km) |
| Boulder to Reinfeld | 4,916.52 mi (7,912.37 km) |
| Boulder to Reinheim | 5,054.35 mi (8,134.18 km) |
| Boulder to Reiskirchen | 5,018.00 mi (8,075.70 km) |
| Boulder to Rellingen | 4,905.24 mi (7,894.22 km) |
| Boulder to Remagen | 4,967.08 mi (7,993.75 km) |
| Boulder to Remscheid | 4,938.24 mi (7,947.33 km) |
| Boulder to Rendsburg | 4,870.31 mi (7,838.01 km) |
| Boulder to Renningen | 5,107.95 mi (8,220.45 km) |
| Boulder to Reutlingen | 5,130.74 mi (8,257.13 km) |
| Boulder to Rhaude | 4,858.38 mi (7,818.81 km) |
| Boulder to Rheda-Wiedenbruck | 4,942.96 mi (7,954.92 km) |
| Boulder to Rhede | 4,892.40 mi (7,873.56 km) |
| Boulder to Rheinau | 5,079.29 mi (8,174.32 km) |
