| Merthyr Tudful to Rochefort | 415.56 mi (668.78 km) |
| Merthyr Tudful to Rodez | 579.62 mi (932.81 km) |
| Merthyr Tudful to Rognac | 696.21 mi (1,120.44 km) |
| Merthyr Tudful to Roissy-en-Brie | 335.28 mi (539.58 km) |
| Merthyr Tudful to Romainville | 323.57 mi (520.74 km) |
| Merthyr Tudful to Romans-sur-Isere | 602.23 mi (969.19 km) |
| Merthyr Tudful to Rombas | 450.16 mi (724.47 km) |
| Merthyr Tudful to Romilly-sur-Seine | 385.40 mi (620.24 km) |
| Merthyr Tudful to Ronchin | 290.81 mi (468.02 km) |
| Merthyr Tudful to Roncq | 289.13 mi (465.31 km) |
| Merthyr Tudful to Roquebrune-sur-Argens | 737.97 mi (1,187.65 km) |
| Merthyr Tudful to Roquevaire | 714.28 mi (1,149.53 km) |
| Merthyr Tudful to Rosny-sous-Bois | 326.02 mi (524.68 km) |
| Merthyr Tudful to Roubaix | 292.95 mi (471.46 km) |
| Merthyr Tudful to Rouen | 252.19 mi (405.87 km) |
