| Castelnaudary to Silver Firs (Washington) | 5,279.08 mi (8,495.86 km) |
| Castelnaudary to Silver Spring (Maryland) | 3,960.65 mi (6,374.06 km) |
| Castelnaudary to Silver Springs Shores (Florida) | 4,586.85 mi (7,381.82 km) |
| Castelnaudary to Silverdale (Washington) | 5,305.08 mi (8,537.71 km) |
| Castelnaudary to Silverton (Oregon) | 5,453.48 mi (8,776.52 km) |
| Castelnaudary to Simi Valley (California) | 5,904.26 mi (9,501.98 km) |
| Castelnaudary to Simpsonville (South Carolina) | 4,365.49 mi (7,025.57 km) |
| Castelnaudary to Sioux City (Iowa) | 4,651.27 mi (7,485.50 km) |
| Castelnaudary to Sioux Falls (South Dakota) | 4,619.71 mi (7,434.70 km) |
| Castelnaudary to Skokie (Illinois) | 4,316.04 mi (6,945.99 km) |
| Castelnaudary to Sleepy Hollow (New York) | 3,743.69 mi (6,024.89 km) |
| Castelnaudary to Slidell (Louisiana) | 4,899.74 mi (7,885.37 km) |
| Castelnaudary to Smithfield (North Carolina) | 4,153.51 mi (6,684.43 km) |
| Castelnaudary to Smithfield (Utah) | 5,263.01 mi (8,469.99 km) |
| Castelnaudary to Smithville (Missouri) | 4,711.81 mi (7,582.92 km) |
