| Unicov to Silver Firs (Washington) | 5,267.93 mi (8,477.91 km) |
| Unicov to Silver Spring (Maryland) | 4,396.07 mi (7,074.79 km) |
| Unicov to Silver Springs Shores (Florida) | 5,087.28 mi (8,187.19 km) |
| Unicov to Silverdale (Washington) | 5,290.90 mi (8,514.87 km) |
| Unicov to Silverton (Oregon) | 5,459.36 mi (8,786.00 km) |
| Unicov to Simi Valley (California) | 6,033.23 mi (9,709.54 km) |
| Unicov to Simpsonville (South Carolina) | 4,809.43 mi (7,740.02 km) |
| Unicov to Sioux City (Iowa) | 4,904.74 mi (7,893.42 km) |
| Unicov to Sioux Falls (South Dakota) | 4,859.35 mi (7,820.37 km) |
| Unicov to Skokie (Illinois) | 4,640.19 mi (7,467.67 km) |
| Unicov to Sleepy Hollow (New York) | 4,175.79 mi (6,720.29 km) |
| Unicov to Slidell (Louisiana) | 5,328.51 mi (8,575.41 km) |
| Unicov to Smithfield (North Carolina) | 4,617.89 mi (7,431.78 km) |
| Unicov to Smithfield (Utah) | 5,394.05 mi (8,680.88 km) |
| Unicov to Smithville (Missouri) | 5,012.22 mi (8,066.39 km) |
