| Merthyr Tudful to Rheinbach | 453.38 mi (729.64 km) |
| Merthyr Tudful to Rheinberg | 427.71 mi (688.33 km) |
| Merthyr Tudful to Rheine | 460.84 mi (741.65 km) |
| Merthyr Tudful to Rheinfelden (Baden) | 576.29 mi (927.45 km) |
| Merthyr Tudful to Ribnitz-Damgarten | 679.67 mi (1,093.82 km) |
| Merthyr Tudful to Richterich | 412.82 mi (664.37 km) |
| Merthyr Tudful to Riedlingen | 621.70 mi (1,000.53 km) |
| Merthyr Tudful to Riegelsberg | 483.21 mi (777.66 km) |
| Merthyr Tudful to Rielasingen-Worblingen | 610.79 mi (982.97 km) |
| Merthyr Tudful to Riesa | 715.75 mi (1,151.89 km) |
| Merthyr Tudful to Rietberg | 504.45 mi (811.84 km) |
| Merthyr Tudful to Rinteln | 530.64 mi (853.98 km) |
| Merthyr Tudful to Ritterhude | 519.84 mi (836.60 km) |
| Merthyr Tudful to Rodenbach | 550.67 mi (886.21 km) |
| Merthyr Tudful to Rodental | 634.86 mi (1,021.72 km) |
