| Castle Rock to Sinop | 6,278.47 mi (10,104.22 km) |
| Castle Rock to Siran | 6,488.64 mi (10,442.46 km) |
| Castle Rock to Sirnak | 6,732.97 mi (10,835.67 km) |
| Castle Rock to Sirvan | 6,688.99 mi (10,764.89 km) |
| Castle Rock to Sivas | 6,463.31 mi (10,401.69 km) |
| Castle Rock to Sivasli | 6,335.62 mi (10,196.20 km) |
| Castle Rock to Siverek | 6,643.35 mi (10,691.44 km) |
| Castle Rock to Sivrice | 6,600.36 mi (10,622.25 km) |
| Castle Rock to Sivrihisar | 6,333.54 mi (10,192.85 km) |
| Castle Rock to Sogut | 6,261.57 mi (10,077.02 km) |
| Castle Rock to Sogutlu | 6,219.15 mi (10,008.75 km) |
| Castle Rock to Soke | 6,308.07 mi (10,151.86 km) |
| Castle Rock to Solhan | 6,609.90 mi (10,637.61 km) |
| Castle Rock to Soma | 6,232.69 mi (10,030.54 km) |
| Castle Rock to Sorgun | 6,412.14 mi (10,319.34 km) |
