| Darby to Silver Firs (Washington) | 2,359.93 mi (3,797.94 km) |
| Darby to Silver Spring (Maryland) | 113.29 mi (182.33 km) |
| Darby to Silver Springs Shores (Florida) | 839.29 mi (1,350.71 km) |
| Darby to Silverdale (Washington) | 2,385.70 mi (3,839.41 km) |
| Darby to Silverton (Oregon) | 2,412.32 mi (3,882.26 km) |
| Darby to Simi Valley (California) | 2,404.35 mi (3,869.42 km) |
| Darby to Simpsonville (South Carolina) | 525.46 mi (845.64 km) |
| Darby to Sioux City (Iowa) | 1,109.62 mi (1,785.76 km) |
| Darby to Sioux Falls (South Dakota) | 1,131.52 mi (1,821.01 km) |
| Darby to Skokie (Illinois) | 666.48 mi (1,072.59 km) |
| Darby to Sleepy Hollow (New York) | 109.02 mi (175.46 km) |
| Darby to Slidell (Louisiana) | 1,054.31 mi (1,696.75 km) |
| Darby to Smithfield (North Carolina) | 348.14 mi (560.27 km) |
| Darby to Smithfield (Utah) | 1,900.38 mi (3,058.37 km) |
| Darby to Smithville (Missouri) | 1,026.02 mi (1,651.22 km) |
