| Castle Rock to Sestu | 5,586.12 mi (8,989.99 km) |
| Castle Rock to Settimo Torinese | 5,259.35 mi (8,464.10 km) |
| Castle Rock to Seveso | 5,283.89 mi (8,503.59 km) |
| Castle Rock to Sezze | 5,625.18 mi (9,052.85 km) |
| Castle Rock to Siano | 5,718.27 mi (9,202.66 km) |
| Castle Rock to Siena | 5,473.44 mi (8,808.66 km) |
| Castle Rock to Signa | 5,442.54 mi (8,758.92 km) |
| Castle Rock to Silea | 5,392.42 mi (8,678.25 km) |
| Castle Rock to Silvi Paese | 5,609.55 mi (9,027.71 km) |
| Castle Rock to Sinalunga | 5,492.67 mi (8,839.60 km) |
| Castle Rock to Siniscola | 5,547.37 mi (8,927.62 km) |
| Castle Rock to Sinnai | 5,590.22 mi (8,996.59 km) |
| Castle Rock to Siracusa | 5,930.32 mi (9,543.92 km) |
| Castle Rock to Solaro | 5,283.36 mi (8,502.74 km) |
| Castle Rock to Soliera | 5,389.92 mi (8,674.24 km) |
