| Alcala la Real to Silver Firs (Washington) | 5,425.50 mi (8,731.49 km) |
| Alcala la Real to Silver Spring (Maryland) | 3,855.82 mi (6,205.34 km) |
| Alcala la Real to Silver Springs Shores (Florida) | 4,419.71 mi (7,112.84 km) |
| Alcala la Real to Silverdale (Washington) | 5,452.69 mi (8,775.25 km) |
| Alcala la Real to Silverton (Oregon) | 5,586.20 mi (8,990.12 km) |
| Alcala la Real to Simi Valley (California) | 5,953.62 mi (9,581.43 km) |
| Alcala la Real to Simpsonville (South Carolina) | 4,244.21 mi (6,830.40 km) |
| Alcala la Real to Sioux City (Iowa) | 4,651.67 mi (7,486.14 km) |
| Alcala la Real to Sioux Falls (South Dakota) | 4,629.75 mi (7,450.86 km) |
| Alcala la Real to Skokie (Illinois) | 4,278.71 mi (6,885.92 km) |
| Alcala la Real to Sleepy Hollow (New York) | 3,647.40 mi (5,869.92 km) |
| Alcala la Real to Slidell (Louisiana) | 4,777.05 mi (7,687.91 km) |
| Alcala la Real to Smithfield (North Carolina) | 4,022.68 mi (6,473.88 km) |
| Alcala la Real to Smithfield (Utah) | 5,325.36 mi (8,570.34 km) |
| Alcala la Real to Smithville (Missouri) | 4,680.22 mi (7,532.09 km) |
