| Ashton to Silver Firs (Washington) | 4,606.09 mi (7,412.79 km) |
| Ashton to Silver Spring (Maryland) | 3,540.16 mi (5,697.34 km) |
| Ashton to Silver Springs Shores (Florida) | 4,227.28 mi (6,803.15 km) |
| Ashton to Silverdale (Washington) | 4,631.22 mi (7,453.23 km) |
| Ashton to Silverton (Oregon) | 4,787.29 mi (7,704.41 km) |
| Ashton to Simi Valley (California) | 5,291.65 mi (8,516.09 km) |
| Ashton to Simpsonville (South Carolina) | 3,953.40 mi (6,362.38 km) |
| Ashton to Sioux City (Iowa) | 4,099.23 mi (6,597.07 km) |
| Ashton to Sioux Falls (South Dakota) | 4,059.06 mi (6,532.43 km) |
| Ashton to Skokie (Illinois) | 3,808.97 mi (6,129.94 km) |
| Ashton to Sleepy Hollow (New York) | 3,319.75 mi (5,342.62 km) |
| Ashton to Slidell (Louisiana) | 4,475.82 mi (7,203.13 km) |
| Ashton to Smithfield (North Carolina) | 3,759.44 mi (6,050.23 km) |
| Ashton to Smithfield (Utah) | 4,647.73 mi (7,479.80 km) |
| Ashton to Smithville (Missouri) | 4,190.32 mi (6,743.67 km) |
