| Federal Way to Silver Firs (Washington) | 39.27 mi (63.21 km) |
| Federal Way to Silver Spring (Maryland) | 2,320.08 mi (3,733.81 km) |
| Federal Way to Silver Springs Shores (Florida) | 2,485.72 mi (4,000.38 km) |
| Federal Way to Silverdale (Washington) | 29.52 mi (47.51 km) |
| Federal Way to Silverton (Oregon) | 160.75 mi (258.71 km) |
| Federal Way to Simi Valley (California) | 920.23 mi (1,480.96 km) |
| Federal Way to Simpsonville (South Carolina) | 2,232.73 mi (3,593.23 km) |
| Federal Way to Sioux City (Iowa) | 1,305.88 mi (2,101.60 km) |
| Federal Way to Sioux Falls (South Dakota) | 1,262.60 mi (2,031.96 km) |
| Federal Way to Skokie (Illinois) | 1,723.46 mi (2,773.64 km) |
| Federal Way to Sleepy Hollow (New York) | 2,398.79 mi (3,860.48 km) |
| Federal Way to Slidell (Louisiana) | 2,087.07 mi (3,358.82 km) |
| Federal Way to Smithfield (North Carolina) | 2,384.09 mi (3,836.81 km) |
| Federal Way to Smithfield (Utah) | 639.89 mi (1,029.80 km) |
| Federal Way to Smithville (Missouri) | 1,488.36 mi (2,395.28 km) |
