| Merthyr Tudful to Radauti | 1,324.77 mi (2,132.01 km) |
| Merthyr Tudful to Ramnicu Sarat | 1,447.45 mi (2,329.44 km) |
| Merthyr Tudful to Ramnicu Valcea | 1,342.84 mi (2,161.09 km) |
| Merthyr Tudful to Rasnov | 1,372.35 mi (2,208.58 km) |
| Merthyr Tudful to Reghin | 1,303.15 mi (2,097.21 km) |
| Merthyr Tudful to Resita | 1,231.31 mi (1,981.61 km) |
| Merthyr Tudful to Roman | 1,393.51 mi (2,242.64 km) |
| Merthyr Tudful to Rosiori de Vede | 1,404.29 mi (2,259.99 km) |
| Merthyr Tudful to Rovinari | 1,298.41 mi (2,089.59 km) |
| Merthyr Tudful to Roznov | 1,378.40 mi (2,218.32 km) |
| Merthyr Tudful to Sabaoani | 1,387.57 mi (2,233.08 km) |
| Merthyr Tudful to Sacele | 1,382.07 mi (2,224.23 km) |
| Merthyr Tudful to Sacueni | 1,174.69 mi (1,890.48 km) |
| Merthyr Tudful to Salcea | 1,349.24 mi (2,171.39 km) |
| Merthyr Tudful to Salonta | 1,172.20 mi (1,886.48 km) |
