| Southlake to Siloam Springs (Arkansas) | 268.30 mi (431.79 km) |
| Southlake to Silver Firs (Washington) | 1,657.77 mi (2,667.92 km) |
| Southlake to Silver Spring (Maryland) | 1,197.42 mi (1,927.07 km) |
| Southlake to Silver Springs Shores (Florida) | 933.56 mi (1,502.42 km) |
| Southlake to Silverdale (Washington) | 1,672.94 mi (2,692.33 km) |
| Southlake to Silverton (Oregon) | 1,598.37 mi (2,572.33 km) |
| Southlake to Simi Valley (California) | 1,243.81 mi (2,001.71 km) |
| Southlake to Simpsonville (South Carolina) | 862.62 mi (1,388.25 km) |
| Southlake to Sioux City (Iowa) | 660.55 mi (1,063.05 km) |
| Southlake to Sioux Falls (South Dakota) | 731.71 mi (1,177.57 km) |
| Southlake to Skokie (Illinois) | 811.21 mi (1,305.52 km) |
| Southlake to Sleepy Hollow (New York) | 1,396.18 mi (2,246.93 km) |
| Southlake to Slidell (Louisiana) | 470.82 mi (757.72 km) |
| Southlake to Smithfield (North Carolina) | 1,086.68 mi (1,748.85 km) |
| Southlake to Smithfield (Utah) | 1,010.24 mi (1,625.83 km) |
