| Wentzville to Siloam Springs (Arkansas) | 270.87 mi (435.92 km) |
| Wentzville to Silver Firs (Washington) | 1,677.49 mi (2,699.66 km) |
| Wentzville to Silver Spring (Maryland) | 743.83 mi (1,197.08 km) |
| Wentzville to Silver Springs Shores (Florida) | 839.72 mi (1,351.40 km) |
| Wentzville to Silverdale (Washington) | 1,699.57 mi (2,735.19 km) |
| Wentzville to Silverton (Oregon) | 1,683.82 mi (2,709.85 km) |
| Wentzville to Simi Valley (California) | 1,572.93 mi (2,531.39 km) |
| Wentzville to Simpsonville (South Carolina) | 553.52 mi (890.81 km) |
| Wentzville to Sioux City (Iowa) | 385.18 mi (619.89 km) |
| Wentzville to Sioux Falls (South Dakota) | 446.48 mi (718.54 km) |
| Wentzville to Skokie (Illinois) | 276.66 mi (445.25 km) |
| Wentzville to Sleepy Hollow (New York) | 912.24 mi (1,468.10 km) |
| Wentzville to Slidell (Louisiana) | 592.34 mi (953.28 km) |
| Wentzville to Smithfield (North Carolina) | 725.28 mi (1,167.22 km) |
| Wentzville to Smithfield (Utah) | 1,120.65 mi (1,803.52 km) |
