| Castrovillari to Silver Firs (Washington) | 5,862.47 mi (9,434.74 km) |
| Castrovillari to Silver Spring (Maryland) | 4,720.28 mi (7,596.55 km) |
| Castrovillari to Silver Springs Shores (Florida) | 5,357.91 mi (8,622.73 km) |
| Castrovillari to Silverdale (Washington) | 5,886.82 mi (9,473.91 km) |
| Castrovillari to Silverton (Oregon) | 6,047.94 mi (9,733.21 km) |
| Castrovillari to Simi Valley (California) | 6,566.91 mi (10,568.42 km) |
| Castrovillari to Simpsonville (South Carolina) | 5,128.06 mi (8,252.82 km) |
| Castrovillari to Sioux City (Iowa) | 5,360.49 mi (8,626.88 km) |
| Castrovillari to Sioux Falls (South Dakota) | 5,323.41 mi (8,567.19 km) |
| Castrovillari to Skokie (Illinois) | 5,048.11 mi (8,124.15 km) |
| Castrovillari to Sleepy Hollow (New York) | 4,501.81 mi (7,244.97 km) |
| Castrovillari to Slidell (Louisiana) | 5,661.02 mi (9,110.52 km) |
| Castrovillari to Smithfield (North Carolina) | 4,919.00 mi (7,916.36 km) |
| Castrovillari to Smithfield (Utah) | 5,922.99 mi (9,532.14 km) |
| Castrovillari to Smithville (Missouri) | 5,438.15 mi (8,751.85 km) |
