| Cwmbran to Sinop | 1,897.02 mi (3,052.96 km) |
| Cwmbran to Siran | 2,139.37 mi (3,442.98 km) |
| Cwmbran to Sirnak | 2,393.83 mi (3,852.50 km) |
| Cwmbran to Sirvan | 2,351.99 mi (3,785.17 km) |
| Cwmbran to Sivas | 2,067.47 mi (3,327.27 km) |
| Cwmbran to Sivasli | 1,815.17 mi (2,921.24 km) |
| Cwmbran to Siverek | 2,250.18 mi (3,621.32 km) |
| Cwmbran to Sivrice | 2,219.90 mi (3,572.59 km) |
| Cwmbran to Sivrihisar | 1,849.21 mi (2,976.02 km) |
| Cwmbran to Sogut | 1,768.32 mi (2,845.84 km) |
| Cwmbran to Sogutlu | 1,743.98 mi (2,806.67 km) |
| Cwmbran to Soke | 1,756.89 mi (2,827.45 km) |
| Cwmbran to Solhan | 2,272.06 mi (3,656.53 km) |
| Cwmbran to Soma | 1,698.75 mi (2,733.87 km) |
| Cwmbran to Sorgun | 1,987.32 mi (3,198.28 km) |
