| Merthyr Tudful to Roznava | 1,073.54 mi (1,727.70 km) |
| Merthyr Tudful to Ruzomberok | 1,011.43 mi (1,627.74 km) |
| Merthyr Tudful to Sabinov | 1,086.84 mi (1,749.10 km) |
| Merthyr Tudful to Sal'a | 973.24 mi (1,566.28 km) |
| Merthyr Tudful to Samorin | 952.55 mi (1,532.98 km) |
| Merthyr Tudful to Senec | 951.10 mi (1,530.65 km) |
| Merthyr Tudful to Senica | 937.88 mi (1,509.37 km) |
| Merthyr Tudful to Sered' | 963.37 mi (1,550.39 km) |
| Merthyr Tudful to Skalica | 927.99 mi (1,493.46 km) |
| Merthyr Tudful to Smizany | 1,066.46 mi (1,716.30 km) |
| Merthyr Tudful to Snina | 1,135.34 mi (1,827.15 km) |
| Merthyr Tudful to Spisska Nova Ves | 1,068.36 mi (1,719.37 km) |
| Merthyr Tudful to Stara L'ubovna | 1,064.96 mi (1,713.89 km) |
| Merthyr Tudful to Stara Tura | 949.59 mi (1,528.22 km) |
| Merthyr Tudful to Stropkov | 1,108.84 mi (1,784.51 km) |
