| Alken to Silver Firs (Washington) | 4,938.02 mi (7,946.98 km) |
| Alken to Silver Spring (Maryland) | 3,895.37 mi (6,268.99 km) |
| Alken to Silver Springs Shores (Florida) | 4,575.51 mi (7,363.57 km) |
| Alken to Silverdale (Washington) | 4,962.63 mi (7,986.59 km) |
| Alken to Silverton (Oregon) | 5,122.27 mi (8,243.49 km) |
| Alken to Simi Valley (California) | 5,643.30 mi (9,082.01 km) |
| Alken to Simpsonville (South Carolina) | 4,308.31 mi (6,933.55 km) |
| Alken to Sioux City (Iowa) | 4,459.90 mi (7,177.51 km) |
| Alken to Sioux Falls (South Dakota) | 4,419.21 mi (7,112.03 km) |
| Alken to Skokie (Illinois) | 4,170.49 mi (6,711.76 km) |
| Alken to Sleepy Hollow (New York) | 3,674.96 mi (5,914.27 km) |
| Alken to Slidell (Louisiana) | 4,832.72 mi (7,777.50 km) |
| Alken to Smithfield (North Carolina) | 4,111.74 mi (6,617.21 km) |
| Alken to Smithfield (Utah) | 4,999.67 mi (8,046.19 km) |
| Alken to Smithville (Missouri) | 4,551.93 mi (7,325.63 km) |
