| Park Forest to Silver Firs (Washington) | 1,734.04 mi (2,790.67 km) |
| Park Forest to Silver Spring (Maryland) | 587.57 mi (945.60 km) |
| Park Forest to Silver Springs Shores (Florida) | 911.95 mi (1,467.64 km) |
| Park Forest to Silverdale (Washington) | 1,758.45 mi (2,829.96 km) |
| Park Forest to Silverton (Oregon) | 1,768.95 mi (2,846.85 km) |
| Park Forest to Simi Valley (California) | 1,755.28 mi (2,824.86 km) |
| Park Forest to Simpsonville (South Carolina) | 551.85 mi (888.12 km) |
| Park Forest to Sioux City (Iowa) | 452.22 mi (727.77 km) |
| Park Forest to Sioux Falls (South Dakota) | 481.80 mi (775.39 km) |
| Park Forest to Skokie (Illinois) | 38.40 mi (61.79 km) |
| Park Forest to Sleepy Hollow (New York) | 716.95 mi (1,153.82 km) |
| Park Forest to Slidell (Louisiana) | 782.14 mi (1,258.73 km) |
| Park Forest to Smithfield (North Carolina) | 651.23 mi (1,048.05 km) |
| Park Forest to Smithfield (Utah) | 1,242.25 mi (1,999.21 km) |
| Park Forest to Smithville (Missouri) | 389.80 mi (627.33 km) |
