| Knic to Silver Firs (Washington) | 5,706.05 mi (9,183.00 km) |
| Knic to Silver Spring (Maryland) | 4,755.58 mi (7,653.36 km) |
| Knic to Silver Springs Shores (Florida) | 5,426.26 mi (8,732.73 km) |
| Knic to Silverdale (Washington) | 5,729.10 mi (9,220.10 km) |
| Knic to Silverton (Oregon) | 5,897.14 mi (9,490.53 km) |
| Knic to Simi Valley (California) | 6,463.68 mi (10,402.29 km) |
| Knic to Simpsonville (South Carolina) | 5,168.00 mi (8,317.09 km) |
| Knic to Sioux City (Iowa) | 5,313.69 mi (8,551.55 km) |
| Knic to Sioux Falls (South Dakota) | 5,270.73 mi (8,482.42 km) |
| Knic to Skokie (Illinois) | 5,032.68 mi (8,099.31 km) |
| Knic to Sleepy Hollow (New York) | 4,535.27 mi (7,298.82 km) |
| Knic to Slidell (Louisiana) | 5,694.32 mi (9,164.12 km) |
| Knic to Smithfield (North Carolina) | 4,968.46 mi (7,995.97 km) |
| Knic to Smithfield (Utah) | 5,822.91 mi (9,371.07 km) |
| Knic to Smithville (Missouri) | 5,411.79 mi (8,709.44 km) |
