| Fort William to Silver Firs (Washington) | 4,354.18 mi (7,007.37 km) |
| Fort William to Silver Spring (Maryland) | 3,371.36 mi (5,425.69 km) |
| Fort William to Silver Springs Shores (Florida) | 4,074.41 mi (6,557.13 km) |
| Fort William to Silverdale (Washington) | 4,379.09 mi (7,047.47 km) |
| Fort William to Silverton (Oregon) | 4,536.81 mi (7,301.30 km) |
| Fort William to Simi Valley (California) | 5,054.24 mi (8,134.02 km) |
| Fort William to Simpsonville (South Carolina) | 3,784.42 mi (6,090.43 km) |
| Fort William to Sioux City (Iowa) | 3,882.81 mi (6,248.78 km) |
| Fort William to Sioux Falls (South Dakota) | 3,840.07 mi (6,179.99 km) |
| Fort William to Skokie (Illinois) | 3,608.56 mi (5,807.42 km) |
| Fort William to Sleepy Hollow (New York) | 3,151.59 mi (5,072.00 km) |
| Fort William to Slidell (Louisiana) | 4,299.52 mi (6,919.40 km) |
| Fort William to Smithfield (North Carolina) | 3,598.16 mi (5,790.67 km) |
| Fort William to Smithfield (Utah) | 4,410.75 mi (7,098.41 km) |
| Fort William to Smithville (Missouri) | 3,983.35 mi (6,410.58 km) |
