| Merthyr Tudful to Rodgau | 546.96 mi (880.25 km) |
| Merthyr Tudful to Roding | 719.12 mi (1,157.31 km) |
| Merthyr Tudful to Rodinghausen | 505.17 mi (812.99 km) |
| Merthyr Tudful to Roetgen | 421.20 mi (677.85 km) |
| Merthyr Tudful to Rommerskirchen | 436.55 mi (702.56 km) |
| Merthyr Tudful to Ronnenberg | 554.71 mi (892.72 km) |
| Merthyr Tudful to Rosbach vor der Hohe | 533.71 mi (858.93 km) |
| Merthyr Tudful to Rosdorf | 569.04 mi (915.79 km) |
| Merthyr Tudful to Rosenheim | 740.46 mi (1,191.65 km) |
| Merthyr Tudful to Rosrath | 459.33 mi (739.21 km) |
| Merthyr Tudful to Rossdorf | 544.92 mi (876.96 km) |
| Merthyr Tudful to Rosstal | 645.25 mi (1,038.43 km) |
| Merthyr Tudful to Rostock | 664.71 mi (1,069.74 km) |
| Merthyr Tudful to Rotenburg an der Fulda | 566.89 mi (912.32 km) |
| Merthyr Tudful to Roth | 657.72 mi (1,058.50 km) |
