| Front Royal to Silver Firs (Washington) | 2,258.78 mi (3,635.15 km) |
| Front Royal to Silver Spring (Maryland) | 62.71 mi (100.92 km) |
| Front Royal to Silver Springs Shores (Florida) | 712.45 mi (1,146.58 km) |
| Front Royal to Silverdale (Washington) | 2,283.78 mi (3,675.38 km) |
| Front Royal to Silverton (Oregon) | 2,299.46 mi (3,700.62 km) |
| Front Royal to Simi Valley (California) | 2,254.46 mi (3,628.20 km) |
| Front Royal to Simpsonville (South Carolina) | 367.12 mi (590.83 km) |
| Front Royal to Sioux City (Iowa) | 982.77 mi (1,581.61 km) |
| Front Royal to Sioux Falls (South Dakota) | 1,012.52 mi (1,629.49 km) |
| Front Royal to Skokie (Illinois) | 545.85 mi (878.46 km) |
| Front Royal to Sleepy Hollow (New York) | 272.88 mi (439.16 km) |
| Front Royal to Slidell (Louisiana) | 888.12 mi (1,429.29 km) |
| Front Royal to Smithfield (North Carolina) | 235.97 mi (379.76 km) |
| Front Royal to Smithfield (Utah) | 1,770.66 mi (2,849.61 km) |
| Front Royal to Smithville (Missouri) | 877.52 mi (1,412.24 km) |
