| Houston to Silver Firs (Washington) | 1,889.23 mi (3,040.42 km) |
| Houston to Silver Spring (Maryland) | 1,222.08 mi (1,966.75 km) |
| Houston to Silver Springs Shores (Florida) | 805.53 mi (1,296.37 km) |
| Houston to Silverdale (Washington) | 1,903.36 mi (3,063.16 km) |
| Houston to Silverton (Oregon) | 1,820.30 mi (2,929.49 km) |
| Houston to Simi Valley (California) | 1,399.61 mi (2,252.45 km) |
| Houston to Simpsonville (South Carolina) | 838.92 mi (1,350.12 km) |
| Houston to Sioux City (Iowa) | 879.93 mi (1,416.10 km) |
| Houston to Sioux Falls (South Dakota) | 953.15 mi (1,533.95 km) |
| Houston to Skokie (Illinois) | 947.46 mi (1,524.79 km) |
| Houston to Sleepy Hollow (New York) | 1,435.10 mi (2,309.57 km) |
| Houston to Slidell (Louisiana) | 337.06 mi (542.44 km) |
| Houston to Smithfield (North Carolina) | 1,065.47 mi (1,714.71 km) |
| Houston to Smithfield (Utah) | 1,237.48 mi (1,991.53 km) |
| Houston to Smithville (Missouri) | 665.31 mi (1,070.71 km) |
