| Castalla to Silver Firs (Washington) | 5,466.48 mi (8,797.44 km) |
| Castalla to Silver Spring (Maryland) | 3,979.21 mi (6,403.92 km) |
| Castalla to Silver Springs Shores (Florida) | 4,562.15 mi (7,342.07 km) |
| Castalla to Silverdale (Washington) | 5,493.26 mi (8,840.55 km) |
| Castalla to Silverton (Oregon) | 5,632.74 mi (9,065.02 km) |
| Castalla to Simi Valley (California) | 6,031.34 mi (9,706.51 km) |
| Castalla to Simpsonville (South Carolina) | 4,373.33 mi (7,038.20 km) |
| Castalla to Sioux City (Iowa) | 4,743.54 mi (7,634.00 km) |
| Castalla to Sioux Falls (South Dakota) | 4,718.34 mi (7,593.44 km) |
| Castalla to Skokie (Illinois) | 4,382.11 mi (7,052.33 km) |
| Castalla to Sleepy Hollow (New York) | 3,767.69 mi (6,063.51 km) |
| Castalla to Slidell (Louisiana) | 4,907.61 mi (7,898.03 km) |
| Castalla to Smithfield (North Carolina) | 4,154.12 mi (6,685.40 km) |
| Castalla to Smithfield (Utah) | 5,397.30 mi (8,686.11 km) |
| Castalla to Smithville (Missouri) | 4,782.66 mi (7,696.94 km) |
