| Merthyr Tudful to Suhut | 1,864.86 mi (3,001.21 km) |
| Merthyr Tudful to Sulakyurt | 1,926.91 mi (3,101.07 km) |
| Merthyr Tudful to Sultanbeyli | 1,706.34 mi (2,746.08 km) |
| Merthyr Tudful to Sultandagi | 1,893.11 mi (3,046.67 km) |
| Merthyr Tudful to Sultanhani | 2,001.76 mi (3,221.52 km) |
| Merthyr Tudful to Sultanhisar | 1,796.87 mi (2,891.79 km) |
| Merthyr Tudful to Suluova | 1,981.07 mi (3,188.22 km) |
| Merthyr Tudful to Sumbas | 2,141.38 mi (3,446.22 km) |
| Merthyr Tudful to Sungurlu | 1,954.60 mi (3,145.63 km) |
| Merthyr Tudful to Surmene | 2,168.06 mi (3,489.15 km) |
| Merthyr Tudful to Suruc | 2,262.79 mi (3,641.61 km) |
| Merthyr Tudful to Susehri | 2,112.09 mi (3,399.09 km) |
| Merthyr Tudful to Susurluk | 1,705.61 mi (2,744.92 km) |
| Merthyr Tudful to Susuz | 2,302.65 mi (3,705.76 km) |
| Merthyr Tudful to Sutculer | 1,929.82 mi (3,105.75 km) |
