| Llantrisant to Sinop | 1,911.48 mi (3,076.23 km) |
| Llantrisant to Siran | 2,153.89 mi (3,466.35 km) |
| Llantrisant to Sirnak | 2,408.20 mi (3,875.62 km) |
| Llantrisant to Sirvan | 2,366.42 mi (3,808.38 km) |
| Llantrisant to Sivas | 2,081.58 mi (3,349.97 km) |
| Llantrisant to Sivasli | 1,827.49 mi (2,941.07 km) |
| Llantrisant to Siverek | 2,264.14 mi (3,643.78 km) |
| Llantrisant to Sivrice | 2,234.03 mi (3,595.32 km) |
| Llantrisant to Sivrihisar | 1,862.27 mi (2,997.03 km) |
| Llantrisant to Sogut | 1,781.29 mi (2,866.71 km) |
| Llantrisant to Sogutlu | 1,757.32 mi (2,828.13 km) |
| Llantrisant to Soke | 1,768.37 mi (2,845.92 km) |
| Llantrisant to Solhan | 2,286.56 mi (3,679.85 km) |
| Llantrisant to Soma | 1,710.82 mi (2,753.30 km) |
| Llantrisant to Sorgun | 2,001.15 mi (3,220.55 km) |
