| Swansea to Sinop | 5,889.94 mi (9,478.94 km) |
| Swansea to Siran | 6,118.30 mi (9,846.45 km) |
| Swansea to Sirnak | 6,373.06 mi (10,256.45 km) |
| Swansea to Sirvan | 6,328.81 mi (10,185.24 km) |
| Swansea to Sivas | 6,073.38 mi (9,774.16 km) |
| Swansea to Sivasli | 5,882.34 mi (9,466.71 km) |
| Swansea to Siverek | 6,258.55 mi (10,072.17 km) |
| Swansea to Sivrice | 6,220.07 mi (10,010.23 km) |
| Swansea to Sivrihisar | 5,900.38 mi (9,495.75 km) |
| Swansea to Sogut | 5,822.78 mi (9,370.86 km) |
| Swansea to Sogutlu | 5,788.83 mi (9,316.22 km) |
| Swansea to Soke | 5,833.74 mi (9,388.49 km) |
| Swansea to Solhan | 6,247.31 mi (10,054.07 km) |
| Swansea to Soma | 5,770.07 mi (9,286.03 km) |
| Swansea to Sorgun | 6,008.59 mi (9,669.89 km) |
