| Merthyr Tudful to Racale | 1,306.93 mi (2,103.31 km) |
| Merthyr Tudful to Racconigi | 699.50 mi (1,125.74 km) |
| Merthyr Tudful to Raffadali | 1,287.49 mi (2,072.01 km) |
| Merthyr Tudful to Ragusa | 1,352.24 mi (2,176.23 km) |
| Merthyr Tudful to Ramacca | 1,325.46 mi (2,133.13 km) |
| Merthyr Tudful to Randazzo | 1,305.76 mi (2,101.41 km) |
| Merthyr Tudful to Rapallo | 772.84 mi (1,243.77 km) |
| Merthyr Tudful to Ravanusa | 1,308.84 mi (2,106.37 km) |
| Merthyr Tudful to Ravenna | 876.58 mi (1,410.72 km) |
| Merthyr Tudful to Recanati | 973.37 mi (1,566.48 km) |
| Merthyr Tudful to Recco | 769.15 mi (1,237.82 km) |
| Merthyr Tudful to Reggello | 886.28 mi (1,426.33 km) |
| Merthyr Tudful to Reggio di Calabria | 1,316.34 mi (2,118.45 km) |
| Merthyr Tudful to Reggio Emilia | 805.71 mi (1,296.66 km) |
| Merthyr Tudful to Reggiolo | 802.50 mi (1,291.49 km) |
