| Merthyr Tudful to Reichenbach/Vogtland | 682.16 mi (1,097.84 km) |
| Merthyr Tudful to Reinbek | 583.41 mi (938.90 km) |
| Merthyr Tudful to Reinfeld | 595.87 mi (958.96 km) |
| Merthyr Tudful to Reinheim | 548.78 mi (883.18 km) |
| Merthyr Tudful to Reiskirchen | 534.22 mi (859.74 km) |
| Merthyr Tudful to Rellingen | 567.09 mi (912.65 km) |
| Merthyr Tudful to Remagen | 466.23 mi (750.33 km) |
| Merthyr Tudful to Remscheid | 456.58 mi (734.79 km) |
| Merthyr Tudful to Rendsburg | 569.23 mi (916.08 km) |
| Merthyr Tudful to Renningen | 580.64 mi (934.45 km) |
| Merthyr Tudful to Reutlingen | 600.79 mi (966.88 km) |
| Merthyr Tudful to Rhaude | 470.02 mi (756.42 km) |
| Merthyr Tudful to Rheda-Wiedenbruck | 498.57 mi (802.38 km) |
| Merthyr Tudful to Rhede | 430.45 mi (692.75 km) |
| Merthyr Tudful to Rheinau | 542.79 mi (873.53 km) |
