| Knottingley to Silver Firs (Washington) | 4,616.37 mi (7,429.33 km) |
| Knottingley to Silver Spring (Maryland) | 3,569.43 mi (5,744.44 km) |
| Knottingley to Silver Springs Shores (Florida) | 4,258.42 mi (6,853.26 km) |
| Knottingley to Silverdale (Washington) | 4,641.37 mi (7,469.56 km) |
| Knottingley to Silverton (Oregon) | 4,798.39 mi (7,722.27 km) |
| Knottingley to Simi Valley (California) | 5,308.15 mi (8,542.64 km) |
| Knottingley to Simpsonville (South Carolina) | 3,982.72 mi (6,409.57 km) |
| Knottingley to Sioux City (Iowa) | 4,121.06 mi (6,632.20 km) |
| Knottingley to Sioux Falls (South Dakota) | 4,080.33 mi (6,566.65 km) |
| Knottingley to Skokie (Illinois) | 3,833.79 mi (6,169.89 km) |
| Knottingley to Sleepy Hollow (New York) | 3,349.04 mi (5,389.75 km) |
| Knottingley to Slidell (Louisiana) | 4,504.32 mi (7,249.01 km) |
| Knottingley to Smithfield (North Carolina) | 3,789.61 mi (6,098.79 km) |
| Knottingley to Smithfield (Utah) | 4,664.31 mi (7,506.48 km) |
| Knottingley to Smithville (Missouri) | 4,214.04 mi (6,781.84 km) |
