| Castle Rock to Sugar Hill (Georgia) | 1,204.46 mi (1,938.39 km) |
| Castle Rock to Sugar Land (Texas) | 854.78 mi (1,375.64 km) |
| Castle Rock to Sugarland Run (Virginia) | 1,465.64 mi (2,358.72 km) |
| Castle Rock to Sugarmill Woods (Florida) | 1,469.91 mi (2,365.59 km) |
| Castle Rock to Suisun City (California) | 925.51 mi (1,489.47 km) |
| Castle Rock to Suitland (Maryland) | 1,491.83 mi (2,400.87 km) |
| Castle Rock to Sulphur (Louisiana) | 906.78 mi (1,459.32 km) |
| Castle Rock to Sulphur Springs (Texas) | 670.62 mi (1,079.27 km) |
| Castle Rock to Summerfield (Maryland) | 1,494.05 mi (2,404.44 km) |
| Castle Rock to Summerfield (North Carolina) | 1,375.65 mi (2,213.90 km) |
| Castle Rock to Summerlin South (Nevada) | 614.51 mi (988.96 km) |
| Castle Rock to Summerville (South Carolina) | 1,439.32 mi (2,316.37 km) |
| Castle Rock to Summit (Illinois) | 907.92 mi (1,461.15 km) |
| Castle Rock to Summit (New Jersey) | 1,607.20 mi (2,586.53 km) |
| Castle Rock to Sumner (Washington) | 1,024.86 mi (1,649.36 km) |
