| Castle Rock to Storm Lake (Iowa) | 551.36 mi (887.33 km) |
| Castle Rock to Storrs (Connecticut) | 1,708.45 mi (2,749.49 km) |
| Castle Rock to Stoughton (Wisconsin) | 847.90 mi (1,364.56 km) |
| Castle Rock to Stow (Ohio) | 1,236.99 mi (1,990.75 km) |
| Castle Rock to Streamwood (Illinois) | 890.89 mi (1,433.75 km) |
| Castle Rock to Streator (Illinois) | 852.34 mi (1,371.71 km) |
| Castle Rock to Streetsboro (Ohio) | 1,241.46 mi (1,997.94 km) |
| Castle Rock to Strongsville (Ohio) | 1,216.11 mi (1,957.14 km) |
| Castle Rock to Stuart (Florida) | 1,643.64 mi (2,645.19 km) |
| Castle Rock to Stuarts Draft (Virginia) | 1,390.64 mi (2,238.02 km) |
| Castle Rock to Sturgis (Michigan) | 1,031.12 mi (1,659.42 km) |
| Castle Rock to Suamico (Wisconsin) | 933.02 mi (1,501.55 km) |
| Castle Rock to Sudley (Virginia) | 1,462.20 mi (2,353.19 km) |
| Castle Rock to Suffern (New York) | 1,615.71 mi (2,600.23 km) |
| Castle Rock to Suffolk (Virginia) | 1,540.19 mi (2,478.69 km) |
