| Skien to Silver Firs (Washington) | 4,552.38 mi (7,326.34 km) |
| Skien to Silver Spring (Maryland) | 3,844.23 mi (6,186.69 km) |
| Skien to Silver Springs Shores (Florida) | 4,564.62 mi (7,346.04 km) |
| Skien to Silverdale (Washington) | 4,575.08 mi (7,362.87 km) |
| Skien to Silverton (Oregon) | 4,744.82 mi (7,636.05 km) |
| Skien to Simi Valley (California) | 5,334.40 mi (8,584.88 km) |
| Skien to Simpsonville (South Carolina) | 4,254.02 mi (6,846.19 km) |
| Skien to Sioux City (Iowa) | 4,251.62 mi (6,842.32 km) |
| Skien to Sioux Falls (South Dakota) | 4,201.61 mi (6,761.84 km) |
| Skien to Skokie (Illinois) | 4,021.30 mi (6,471.65 km) |
| Skien to Sleepy Hollow (New York) | 3,627.16 mi (5,837.34 km) |
| Skien to Slidell (Louisiana) | 4,753.92 mi (7,650.70 km) |
| Skien to Smithfield (North Carolina) | 4,080.11 mi (6,566.30 km) |
| Skien to Smithfield (Utah) | 4,699.40 mi (7,562.96 km) |
| Skien to Smithville (Missouri) | 4,376.81 mi (7,043.79 km) |
