| Twin Falls to Siloam Springs (Arkansas) | 1,148.58 mi (1,848.45 km) |
| Twin Falls to Silver Firs (Washington) | 523.05 mi (841.77 km) |
| Twin Falls to Silver Spring (Maryland) | 1,958.04 mi (3,151.16 km) |
| Twin Falls to Silver Springs Shores (Florida) | 2,024.06 mi (3,257.40 km) |
| Twin Falls to Silverdale (Washington) | 533.27 mi (858.22 km) |
| Twin Falls to Silverton (Oregon) | 447.62 mi (720.38 km) |
| Twin Falls to Simi Valley (California) | 618.33 mi (995.10 km) |
| Twin Falls to Simpsonville (South Carolina) | 1,807.75 mi (2,909.29 km) |
| Twin Falls to Sioux City (Iowa) | 918.38 mi (1,477.99 km) |
| Twin Falls to Sioux Falls (South Dakota) | 896.00 mi (1,441.98 km) |
| Twin Falls to Skokie (Illinois) | 1,360.36 mi (2,189.28 km) |
| Twin Falls to Sleepy Hollow (New York) | 2,072.06 mi (3,334.66 km) |
| Twin Falls to Slidell (Louisiana) | 1,603.84 mi (2,581.13 km) |
| Twin Falls to Smithfield (North Carolina) | 1,982.10 mi (3,189.89 km) |
| Twin Falls to Smithfield (Utah) | 143.97 mi (231.69 km) |
