| Merthyr Tudful to Recica | 906.37 mi (1,458.66 km) |
| Merthyr Tudful to Ribnica | 920.10 mi (1,480.76 km) |
| Merthyr Tudful to Ribnica | 913.29 mi (1,469.79 km) |
| Merthyr Tudful to Rogaska Slatina | 938.98 mi (1,511.14 km) |
| Merthyr Tudful to Rogasovci | 935.72 mi (1,505.90 km) |
| Merthyr Tudful to Rogatec | 941.99 mi (1,515.98 km) |
| Merthyr Tudful to Ruse | 923.21 mi (1,485.77 km) |
| Merthyr Tudful to Salovci | 946.05 mi (1,522.51 km) |
| Merthyr Tudful to Selnica ob Dravi | 921.92 mi (1,483.69 km) |
| Merthyr Tudful to Semic | 941.39 mi (1,515.02 km) |
| Merthyr Tudful to Sempeter pri Gorici | 869.04 mi (1,398.58 km) |
| Merthyr Tudful to Sencur | 888.74 mi (1,430.29 km) |
| Merthyr Tudful to Sentilj | 923.82 mi (1,486.75 km) |
| Merthyr Tudful to Sentjernej | 940.88 mi (1,514.20 km) |
| Merthyr Tudful to Sentjur | 929.55 mi (1,495.96 km) |
