| Sanlucar la Mayor to Silver Firs (Washington) | 5,352.65 mi (8,614.25 km) |
| Sanlucar la Mayor to Silver Spring (Maryland) | 3,744.79 mi (6,026.66 km) |
| Sanlucar la Mayor to Silver Springs Shores (Florida) | 4,301.52 mi (6,922.63 km) |
| Sanlucar la Mayor to Silverdale (Washington) | 5,380.03 mi (8,658.32 km) |
| Sanlucar la Mayor to Silverton (Oregon) | 5,510.21 mi (8,867.83 km) |
| Sanlucar la Mayor to Simi Valley (California) | 5,861.52 mi (9,433.20 km) |
| Sanlucar la Mayor to Simpsonville (South Carolina) | 4,130.77 mi (6,647.84 km) |
| Sanlucar la Mayor to Sioux City (Iowa) | 4,553.80 mi (7,328.64 km) |
| Sanlucar la Mayor to Sioux Falls (South Dakota) | 4,533.44 mi (7,295.86 km) |
| Sanlucar la Mayor to Skokie (Illinois) | 4,175.86 mi (6,720.40 km) |
| Sanlucar la Mayor to Sleepy Hollow (New York) | 3,537.75 mi (5,693.46 km) |
| Sanlucar la Mayor to Slidell (Louisiana) | 4,662.86 mi (7,504.14 km) |
| Sanlucar la Mayor to Smithfield (North Carolina) | 3,908.48 mi (6,290.09 km) |
| Sanlucar la Mayor to Smithfield (Utah) | 5,236.55 mi (8,427.42 km) |
| Sanlucar la Mayor to Smithville (Missouri) | 4,577.54 mi (7,366.84 km) |
