| Sedro-Woolley to Silver Firs (Washington) | 44.91 mi (72.28 km) |
| Sedro-Woolley to Silver Spring (Maryland) | 2,312.88 mi (3,722.22 km) |
| Sedro-Woolley to Silver Springs Shores (Florida) | 2,504.87 mi (4,031.21 km) |
| Sedro-Woolley to Silverdale (Washington) | 61.97 mi (99.73 km) |
| Sedro-Woolley to Silverton (Oregon) | 243.78 mi (392.32 km) |
| Sedro-Woolley to Simi Valley (California) | 1,000.37 mi (1,609.94 km) |
| Sedro-Woolley to Simpsonville (South Carolina) | 2,241.20 mi (3,606.86 km) |
| Sedro-Woolley to Sioux City (Iowa) | 1,311.20 mi (2,110.17 km) |
| Sedro-Woolley to Sioux Falls (South Dakota) | 1,264.06 mi (2,034.31 km) |
| Sedro-Woolley to Skokie (Illinois) | 1,719.68 mi (2,767.56 km) |
| Sedro-Woolley to Sleepy Hollow (New York) | 2,383.88 mi (3,836.49 km) |
| Sedro-Woolley to Slidell (Louisiana) | 2,115.87 mi (3,405.16 km) |
| Sedro-Woolley to Smithfield (North Carolina) | 2,385.99 mi (3,839.87 km) |
| Sedro-Woolley to Smithfield (Utah) | 684.21 mi (1,101.13 km) |
| Sedro-Woolley to Smithville (Missouri) | 1,502.22 mi (2,417.59 km) |
