| Dour to Silver Firs (Washington) | 4,927.24 mi (7,929.63 km) |
| Dour to Silver Spring (Maryland) | 3,845.73 mi (6,189.10 km) |
| Dour to Silver Springs Shores (Florida) | 4,521.25 mi (7,276.25 km) |
| Dour to Silverdale (Washington) | 4,952.12 mi (7,969.66 km) |
| Dour to Silverton (Oregon) | 5,109.94 mi (8,223.65 km) |
| Dour to Simi Valley (California) | 5,620.20 mi (9,044.85 km) |
| Dour to Simpsonville (South Carolina) | 4,258.31 mi (6,853.09 km) |
| Dour to Sioux City (Iowa) | 4,425.81 mi (7,122.66 km) |
| Dour to Sioux Falls (South Dakota) | 4,386.29 mi (7,059.05 km) |
| Dour to Skokie (Illinois) | 4,130.25 mi (6,647.00 km) |
| Dour to Sleepy Hollow (New York) | 3,625.39 mi (5,834.51 km) |
| Dour to Slidell (Louisiana) | 4,784.29 mi (7,699.57 km) |
| Dour to Smithfield (North Carolina) | 4,059.96 mi (6,533.87 km) |
| Dour to Smithfield (Utah) | 4,976.31 mi (8,008.59 km) |
| Dour to Smithville (Missouri) | 4,513.90 mi (7,264.43 km) |
