| Caldicot to Silver Firs (Washington) | 4,690.44 mi (7,548.53 km) |
| Caldicot to Silver Spring (Maryland) | 3,550.59 mi (5,714.12 km) |
| Caldicot to Silver Springs Shores (Florida) | 4,225.88 mi (6,800.89 km) |
| Caldicot to Silverdale (Washington) | 4,715.93 mi (7,589.55 km) |
| Caldicot to Silverton (Oregon) | 4,869.16 mi (7,836.15 km) |
| Caldicot to Simi Valley (California) | 5,356.02 mi (8,619.68 km) |
| Caldicot to Simpsonville (South Carolina) | 3,963.05 mi (6,377.91 km) |
| Caldicot to Sioux City (Iowa) | 4,144.41 mi (6,669.79 km) |
| Caldicot to Sioux Falls (South Dakota) | 4,106.58 mi (6,608.90 km) |
| Caldicot to Skokie (Illinois) | 3,841.51 mi (6,182.31 km) |
| Caldicot to Sleepy Hollow (New York) | 3,330.28 mi (5,359.57 km) |
| Caldicot to Slidell (Louisiana) | 4,489.51 mi (7,225.17 km) |
| Caldicot to Smithfield (North Carolina) | 3,764.41 mi (6,058.23 km) |
| Caldicot to Smithfield (Utah) | 4,712.22 mi (7,583.58 km) |
| Caldicot to Smithville (Missouri) | 4,227.43 mi (6,803.40 km) |
