| Ridge to Silver Firs (Washington) | 2,436.86 mi (3,921.75 km) |
| Ridge to Silver Spring (Maryland) | 255.62 mi (411.38 km) |
| Ridge to Silver Springs Shores (Florida) | 963.68 mi (1,550.90 km) |
| Ridge to Silverdale (Washington) | 2,463.21 mi (3,964.15 km) |
| Ridge to Silverton (Oregon) | 2,499.06 mi (4,021.85 km) |
| Ridge to Simi Valley (California) | 2,523.52 mi (4,061.21 km) |
| Ridge to Simpsonville (South Carolina) | 665.68 mi (1,071.31 km) |
| Ridge to Sioux City (Iowa) | 1,213.77 mi (1,953.38 km) |
| Ridge to Sioux Falls (South Dakota) | 1,229.43 mi (1,978.57 km) |
| Ridge to Skokie (Illinois) | 772.19 mi (1,242.72 km) |
| Ridge to Sleepy Hollow (New York) | 53.24 mi (85.69 km) |
| Ridge to Slidell (Louisiana) | 1,196.26 mi (1,925.20 km) |
| Ridge to Smithfield (North Carolina) | 476.22 mi (766.39 km) |
| Ridge to Smithfield (Utah) | 2,002.89 mi (3,223.35 km) |
| Ridge to Smithville (Missouri) | 1,147.48 mi (1,846.69 km) |
