| Iglesias to Silver Firs (Washington) | 5,696.32 mi (9,167.33 km) |
| Iglesias to Silver Spring (Maryland) | 4,391.08 mi (7,066.76 km) |
| Iglesias to Silver Springs Shores (Florida) | 5,004.72 mi (8,054.32 km) |
| Iglesias to Silverdale (Washington) | 5,721.91 mi (9,208.53 km) |
| Iglesias to Silverton (Oregon) | 5,873.91 mi (9,453.14 km) |
| Iglesias to Simi Valley (California) | 6,339.35 mi (10,202.20 km) |
| Iglesias to Simpsonville (South Carolina) | 4,793.60 mi (7,714.55 km) |
| Iglesias to Sioux City (Iowa) | 5,090.30 mi (8,192.04 km) |
| Iglesias to Sioux Falls (South Dakota) | 5,058.53 mi (8,140.92 km) |
| Iglesias to Skokie (Illinois) | 4,754.26 mi (7,651.25 km) |
| Iglesias to Sleepy Hollow (New York) | 4,175.15 mi (6,719.26 km) |
| Iglesias to Slidell (Louisiana) | 5,328.35 mi (8,575.15 km) |
| Iglesias to Smithfield (North Carolina) | 4,579.36 mi (7,369.76 km) |
| Iglesias to Smithfield (Utah) | 5,697.25 mi (9,168.84 km) |
| Iglesias to Smithville (Missouri) | 5,150.47 mi (8,288.88 km) |
