| Merthyr Tudful to Quarteira | 1,039.79 mi (1,673.38 km) |
| Merthyr Tudful to Queluz | 941.45 mi (1,515.12 km) |
| Merthyr Tudful to Reguengos de Monsaraz | 942.41 mi (1,516.66 km) |
| Merthyr Tudful to Resende | 766.32 mi (1,233.27 km) |
| Merthyr Tudful to Ribeira Brava | 1,485.57 mi (2,390.79 km) |
| Merthyr Tudful to Ribeira Grande | 1,440.28 mi (2,317.91 km) |
| Merthyr Tudful to Rio de Mouro | 941.25 mi (1,514.80 km) |
| Merthyr Tudful to Rio Maior | 897.92 mi (1,445.07 km) |
| Merthyr Tudful to Rio Tinto | 770.01 mi (1,239.22 km) |
| Merthyr Tudful to Sabugal | 806.71 mi (1,298.27 km) |
| Merthyr Tudful to Sacavem | 936.27 mi (1,506.78 km) |
| Merthyr Tudful to Salvaterra de Magos | 916.95 mi (1,475.69 km) |
| Merthyr Tudful to Santa Comba Dao | 815.53 mi (1,312.47 km) |
| Merthyr Tudful to Santa Cruz | 1,479.80 mi (2,381.51 km) |
| Merthyr Tudful to Santa Iria da Azoia | 932.56 mi (1,500.81 km) |
