| Thornton Heath to Sinop | 1,770.67 mi (2,849.61 km) |
| Thornton Heath to Siran | 2,013.04 mi (3,239.68 km) |
| Thornton Heath to Sirnak | 2,267.45 mi (3,649.11 km) |
| Thornton Heath to Sirvan | 2,225.63 mi (3,581.80 km) |
| Thornton Heath to Sivas | 1,941.08 mi (3,123.87 km) |
| Thornton Heath to Sivasli | 1,690.97 mi (2,721.36 km) |
| Thornton Heath to Siverek | 2,123.84 mi (3,417.99 km) |
| Thornton Heath to Sivrice | 2,093.51 mi (3,369.18 km) |
| Thornton Heath to Sivrihisar | 1,723.72 mi (2,774.05 km) |
| Thornton Heath to Sogut | 1,642.96 mi (2,644.08 km) |
| Thornton Heath to Sogutlu | 1,618.13 mi (2,604.12 km) |
| Thornton Heath to Soke | 1,634.71 mi (2,630.81 km) |
| Thornton Heath to Solhan | 2,145.72 mi (3,453.21 km) |
| Thornton Heath to Soma | 1,575.10 mi (2,534.88 km) |
| Thornton Heath to Sorgun | 1,861.03 mi (2,995.04 km) |
