| Mountain Home to Silver Firs (Washington) | 451.92 mi (727.30 km) |
| Mountain Home to Silver Spring (Maryland) | 2,016.66 mi (3,245.51 km) |
| Mountain Home to Silver Springs Shores (Florida) | 2,095.22 mi (3,371.93 km) |
| Mountain Home to Silverdale (Washington) | 461.17 mi (742.18 km) |
| Mountain Home to Silverton (Oregon) | 374.51 mi (602.72 km) |
| Mountain Home to Simi Valley (California) | 634.18 mi (1,020.62 km) |
| Mountain Home to Simpsonville (South Carolina) | 1,874.47 mi (3,016.67 km) |
| Mountain Home to Sioux City (Iowa) | 977.38 mi (1,572.94 km) |
| Mountain Home to Sioux Falls (South Dakota) | 951.47 mi (1,531.24 km) |
| Mountain Home to Skokie (Illinois) | 1,417.65 mi (2,281.49 km) |
| Mountain Home to Sleepy Hollow (New York) | 2,126.03 mi (3,421.52 km) |
| Mountain Home to Slidell (Louisiana) | 1,676.91 mi (2,698.72 km) |
| Mountain Home to Smithfield (North Carolina) | 2,046.09 mi (3,292.86 km) |
| Mountain Home to Smithfield (Utah) | 216.61 mi (348.60 km) |
| Mountain Home to Smithville (Missouri) | 1,123.79 mi (1,808.57 km) |
