| Merthyr Tudful to Saint-Esteve | 688.16 mi (1,107.49 km) |
| Merthyr Tudful to Saint-Etienne | 561.51 mi (903.66 km) |
| Merthyr Tudful to Saint-Etienne-du-Rouvray | 255.66 mi (411.45 km) |
| Merthyr Tudful to Saint-Fargeau | 343.31 mi (552.50 km) |
| Merthyr Tudful to Saint-Fons | 560.19 mi (901.54 km) |
| Merthyr Tudful to Saint-Gaudens | 626.40 mi (1,008.09 km) |
| Merthyr Tudful to Saint-Gely-du-Fesc | 648.09 mi (1,042.99 km) |
| Merthyr Tudful to Saint-Genis-Laval | 559.05 mi (899.70 km) |
| Merthyr Tudful to Saint-Genis-Pouilly | 570.13 mi (917.54 km) |
| Merthyr Tudful to Saint-Germain-en-Laye | 311.12 mi (500.69 km) |
| Merthyr Tudful to Saint-Germain-les-Arpajon | 330.68 mi (532.17 km) |
| Merthyr Tudful to Saint-Gilles | 664.24 mi (1,069.00 km) |
| Merthyr Tudful to Saint-Gratien | 314.37 mi (505.94 km) |
| Merthyr Tudful to Saint-Gregoire | 259.31 mi (417.31 km) |
| Merthyr Tudful to Saint-Herblain | 322.49 mi (519.00 km) |
