| Tomball to Siloam Springs (Arkansas) | 425.40 mi (684.62 km) |
| Tomball to Silver Firs (Washington) | 1,864.05 mi (2,999.90 km) |
| Tomball to Silver Spring (Maryland) | 1,220.81 mi (1,964.71 km) |
| Tomball to Silver Springs Shores (Florida) | 819.60 mi (1,319.02 km) |
| Tomball to Silverdale (Washington) | 1,878.24 mi (3,022.74 km) |
| Tomball to Silverton (Oregon) | 1,795.66 mi (2,889.83 km) |
| Tomball to Simi Valley (California) | 1,379.73 mi (2,220.47 km) |
| Tomball to Simpsonville (South Carolina) | 841.71 mi (1,354.61 km) |
| Tomball to Sioux City (Iowa) | 857.88 mi (1,380.62 km) |
| Tomball to Sioux Falls (South Dakota) | 930.93 mi (1,498.19 km) |
| Tomball to Skokie (Illinois) | 934.04 mi (1,503.18 km) |
| Tomball to Sleepy Hollow (New York) | 1,432.68 mi (2,305.68 km) |
| Tomball to Slidell (Louisiana) | 348.78 mi (561.31 km) |
| Tomball to Smithfield (North Carolina) | 1,068.70 mi (1,719.90 km) |
| Tomball to Smithfield (Utah) | 1,212.46 mi (1,951.27 km) |
