| San Lorenzo de El Escorial to Silver Firs (Washington) | 5,245.49 mi (8,441.80 km) |
| San Lorenzo de El Escorial to Silver Spring (Maryland) | 3,753.20 mi (6,040.19 km) |
| San Lorenzo de El Escorial to Silver Springs Shores (Florida) | 4,344.13 mi (6,991.21 km) |
| San Lorenzo de El Escorial to Silverdale (Washington) | 5,272.42 mi (8,485.14 km) |
| San Lorenzo de El Escorial to Silverton (Oregon) | 5,409.94 mi (8,706.45 km) |
| San Lorenzo de El Escorial to Simi Valley (California) | 5,801.69 mi (9,336.92 km) |
| San Lorenzo de El Escorial to Simpsonville (South Carolina) | 4,149.12 mi (6,677.37 km) |
| San Lorenzo de El Escorial to Sioux City (Iowa) | 4,512.91 mi (7,262.83 km) |
| San Lorenzo de El Escorial to Sioux Falls (South Dakota) | 4,487.77 mi (7,222.36 km) |
| San Lorenzo de El Escorial to Skokie (Illinois) | 4,152.02 mi (6,682.03 km) |
| San Lorenzo de El Escorial to Sleepy Hollow (New York) | 3,540.86 mi (5,698.46 km) |
| San Lorenzo de El Escorial to Slidell (Louisiana) | 4,683.73 mi (7,537.73 km) |
| San Lorenzo de El Escorial to Smithfield (North Carolina) | 3,930.92 mi (6,326.21 km) |
| San Lorenzo de El Escorial to Smithfield (Utah) | 5,168.37 mi (8,317.68 km) |
| San Lorenzo de El Escorial to Smithville (Missouri) | 4,552.44 mi (7,326.44 km) |
