| Castleton to Sinop | 1,879.41 mi (3,024.61 km) |
| Castleton to Siran | 2,120.12 mi (3,412.01 km) |
| Castleton to Sirnak | 2,376.46 mi (3,824.55 km) |
| Castleton to Sirvan | 2,333.80 mi (3,755.89 km) |
| Castleton to Sivas | 2,054.64 mi (3,306.62 km) |
| Castleton to Sivasli | 1,826.38 mi (2,939.27 km) |
| Castleton to Siverek | 2,239.14 mi (3,603.55 km) |
| Castleton to Sivrice | 2,206.48 mi (3,550.99 km) |
| Castleton to Sivrihisar | 1,851.33 mi (2,979.43 km) |
| Castleton to Sogut | 1,771.80 mi (2,851.44 km) |
| Castleton to Sogutlu | 1,742.82 mi (2,804.79 km) |
| Castleton to Soke | 1,777.81 mi (2,861.11 km) |
| Castleton to Solhan | 2,252.95 mi (3,625.78 km) |
| Castleton to Soma | 1,713.22 mi (2,757.16 km) |
| Castleton to Sorgun | 1,978.60 mi (3,184.25 km) |
