| Grayslake to Silver Firs (Washington) | 1,692.26 mi (2,723.44 km) |
| Grayslake to Silver Spring (Maryland) | 620.91 mi (999.25 km) |
| Grayslake to Silver Springs Shores (Florida) | 973.64 mi (1,566.92 km) |
| Grayslake to Silverdale (Washington) | 1,717.06 mi (2,763.34 km) |
| Grayslake to Silverton (Oregon) | 1,732.81 mi (2,788.68 km) |
| Grayslake to Simi Valley (California) | 1,745.18 mi (2,808.59 km) |
| Grayslake to Simpsonville (South Carolina) | 611.25 mi (983.72 km) |
| Grayslake to Sioux City (Iowa) | 426.20 mi (685.90 km) |
| Grayslake to Sioux Falls (South Dakota) | 447.43 mi (720.07 km) |
| Grayslake to Skokie (Illinois) | 25.86 mi (41.62 km) |
| Grayslake to Sleepy Hollow (New York) | 734.57 mi (1,182.17 km) |
| Grayslake to Slidell (Louisiana) | 838.32 mi (1,349.14 km) |
| Grayslake to Smithfield (North Carolina) | 701.62 mi (1,129.15 km) |
| Grayslake to Smithfield (Utah) | 1,216.50 mi (1,957.77 km) |
| Grayslake to Smithville (Missouri) | 397.71 mi (640.05 km) |
