| Delaware to Silver Firs (Washington) | 1,985.94 mi (3,196.06 km) |
| Delaware to Silver Spring (Maryland) | 333.95 mi (537.44 km) |
| Delaware to Silver Springs Shores (Florida) | 774.27 mi (1,246.06 km) |
| Delaware to Silverdale (Washington) | 2,010.64 mi (3,235.81 km) |
| Delaware to Silverton (Oregon) | 2,023.45 mi (3,256.43 km) |
| Delaware to Simi Valley (California) | 1,990.92 mi (3,204.08 km) |
| Delaware to Simpsonville (South Carolina) | 386.51 mi (622.03 km) |
| Delaware to Sioux City (Iowa) | 706.13 mi (1,136.41 km) |
| Delaware to Sioux Falls (South Dakota) | 736.31 mi (1,184.98 km) |
| Delaware to Skokie (Illinois) | 271.14 mi (436.35 km) |
| Delaware to Sleepy Hollow (New York) | 485.08 mi (780.67 km) |
| Delaware to Slidell (Louisiana) | 786.92 mi (1,266.42 km) |
| Delaware to Smithfield (North Carolina) | 418.25 mi (673.11 km) |
| Delaware to Smithfield (Utah) | 1,494.76 mi (2,405.58 km) |
| Delaware to Smithville (Missouri) | 612.82 mi (986.24 km) |
