| Galveston to Silver Firs (Washington) | 1,936.87 mi (3,117.10 km) |
| Galveston to Silver Spring (Maryland) | 1,220.77 mi (1,964.64 km) |
| Galveston to Silver Springs Shores (Florida) | 776.43 mi (1,249.54 km) |
| Galveston to Silverdale (Washington) | 1,950.98 mi (3,139.80 km) |
| Galveston to Silverton (Oregon) | 1,867.51 mi (3,005.46 km) |
| Galveston to Simi Valley (California) | 1,440.16 mi (2,317.72 km) |
| Galveston to Simpsonville (South Carolina) | 830.68 mi (1,336.85 km) |
| Galveston to Sioux City (Iowa) | 919.11 mi (1,479.16 km) |
| Galveston to Sioux Falls (South Dakota) | 992.64 mi (1,597.50 km) |
| Galveston to Skokie (Illinois) | 969.59 mi (1,560.40 km) |
| Galveston to Sleepy Hollow (New York) | 1,435.72 mi (2,310.58 km) |
| Galveston to Slidell (Louisiana) | 314.67 mi (506.41 km) |
| Galveston to Smithfield (North Carolina) | 1,055.98 mi (1,699.43 km) |
| Galveston to Smithfield (Utah) | 1,285.03 mi (2,068.05 km) |
| Galveston to Smithville (Missouri) | 701.08 mi (1,128.28 km) |
