| West Chicago to Siloam Springs (Arkansas) | 519.55 mi (836.14 km) |
| West Chicago to Silver Firs (Washington) | 1,696.49 mi (2,730.24 km) |
| West Chicago to Silver Spring (Maryland) | 621.55 mi (1,000.29 km) |
| West Chicago to Silver Springs Shores (Florida) | 949.12 mi (1,527.46 km) |
| West Chicago to Silverdale (Washington) | 1,721.02 mi (2,769.72 km) |
| West Chicago to Silverton (Oregon) | 1,733.24 mi (2,789.38 km) |
| West Chicago to Simi Valley (California) | 1,731.17 mi (2,786.05 km) |
| West Chicago to Simpsonville (South Carolina) | 591.19 mi (951.42 km) |
| West Chicago to Sioux City (Iowa) | 419.82 mi (675.64 km) |
| West Chicago to Sioux Falls (South Dakota) | 446.24 mi (718.15 km) |
| West Chicago to Skokie (Illinois) | 26.74 mi (43.04 km) |
| West Chicago to Sleepy Hollow (New York) | 743.99 mi (1,197.34 km) |
| West Chicago to Slidell (Louisiana) | 806.65 mi (1,298.17 km) |
| West Chicago to Smithfield (North Carolina) | 690.58 mi (1,111.38 km) |
| West Chicago to Smithfield (Utah) | 1,210.54 mi (1,948.18 km) |
