| Merthyr Tudful to Rosolini | 1,365.34 mi (2,197.30 km) |
| Merthyr Tudful to Rossano | 1,273.71 mi (2,049.84 km) |
| Merthyr Tudful to Rottofreno | 749.82 mi (1,206.72 km) |
| Merthyr Tudful to Rovato | 743.06 mi (1,195.84 km) |
| Merthyr Tudful to Roverbella | 784.96 mi (1,263.26 km) |
| Merthyr Tudful to Rovereto | 769.23 mi (1,237.96 km) |
| Merthyr Tudful to Rovigo | 831.77 mi (1,338.60 km) |
| Merthyr Tudful to Rozzano | 720.33 mi (1,159.25 km) |
| Merthyr Tudful to Rubano | 816.25 mi (1,313.62 km) |
| Merthyr Tudful to Rubiera | 813.49 mi (1,309.19 km) |
| Merthyr Tudful to Ruffano | 1,311.68 mi (2,110.94 km) |
| Merthyr Tudful to Russi | 872.11 mi (1,403.52 km) |
| Merthyr Tudful to Rutigliano | 1,215.09 mi (1,955.50 km) |
| Merthyr Tudful to Ruvo di Puglia | 1,190.74 mi (1,916.32 km) |
| Merthyr Tudful to Sabaudia | 1,057.95 mi (1,702.61 km) |
