| Amposta to Silver Firs (Washington) | 5,386.09 mi (8,668.07 km) |
| Amposta to Silver Spring (Maryland) | 3,974.41 mi (6,396.20 km) |
| Amposta to Silver Springs Shores (Florida) | 4,577.74 mi (7,367.15 km) |
| Amposta to Silverdale (Washington) | 5,412.53 mi (8,710.63 km) |
| Amposta to Silverton (Oregon) | 5,556.24 mi (8,941.90 km) |
| Amposta to Simi Valley (California) | 5,979.22 mi (9,622.62 km) |
| Amposta to Simpsonville (South Carolina) | 4,373.92 mi (7,039.14 km) |
| Amposta to Sioux City (Iowa) | 4,706.14 mi (7,573.80 km) |
| Amposta to Sioux Falls (South Dakota) | 4,678.01 mi (7,528.52 km) |
| Amposta to Skokie (Illinois) | 4,356.23 mi (7,010.68 km) |
| Amposta to Sleepy Hollow (New York) | 3,760.12 mi (6,051.33 km) |
| Amposta to Slidell (Louisiana) | 4,908.81 mi (7,899.96 km) |
| Amposta to Smithfield (North Carolina) | 4,157.71 mi (6,691.19 km) |
| Amposta to Smithfield (Utah) | 5,341.30 mi (8,596.00 km) |
| Amposta to Smithville (Missouri) | 4,755.06 mi (7,652.54 km) |
