| Castle Rock to Sesena | 5,035.91 mi (8,104.51 km) |
| Castle Rock to Sestao | 4,930.19 mi (7,934.37 km) |
| Castle Rock to Sevilla | 5,057.36 mi (8,139.03 km) |
| Castle Rock to Sevilla La Nueva | 5,011.82 mi (8,065.75 km) |
| Castle Rock to Silla | 5,204.65 mi (8,376.07 km) |
| Castle Rock to Silleda | 4,740.39 mi (7,628.92 km) |
| Castle Rock to Sitges | 5,211.85 mi (8,387.67 km) |
| Castle Rock to Socuellamos | 5,108.19 mi (8,220.84 km) |
| Castle Rock to Soller | 5,313.44 mi (8,551.16 km) |
| Castle Rock to Solsona | 5,166.79 mi (8,315.14 km) |
| Castle Rock to Son Servera | 5,346.53 mi (8,604.41 km) |
| Castle Rock to Sonseca | 5,042.28 mi (8,114.76 km) |
| Castle Rock to Sopelana | 4,928.31 mi (7,931.35 km) |
| Castle Rock to Soria | 5,016.74 mi (8,073.66 km) |
| Castle Rock to Suances | 4,883.08 mi (7,858.56 km) |
