| Castellon de la Plana to Silver Firs (Washington) | 5,408.37 mi (8,703.94 km) |
| Castellon de la Plana to Silver Spring (Maryland) | 3,967.35 mi (6,384.83 km) |
| Castellon de la Plana to Silver Springs Shores (Florida) | 4,563.34 mi (7,343.99 km) |
| Castellon de la Plana to Silverdale (Washington) | 5,434.96 mi (8,746.72 km) |
| Castellon de la Plana to Silverton (Oregon) | 5,577.00 mi (8,975.31 km) |
| Castellon de la Plana to Simi Valley (California) | 5,990.49 mi (9,640.77 km) |
| Castellon de la Plana to Simpsonville (South Carolina) | 4,364.97 mi (7,024.74 km) |
| Castellon de la Plana to Sioux City (Iowa) | 4,711.51 mi (7,582.45 km) |
| Castellon de la Plana to Sioux Falls (South Dakota) | 4,684.50 mi (7,538.97 km) |
| Castellon de la Plana to Skokie (Illinois) | 4,357.15 mi (7,012.16 km) |
| Castellon de la Plana to Sleepy Hollow (New York) | 3,754.02 mi (6,041.51 km) |
| Castellon de la Plana to Slidell (Louisiana) | 4,899.75 mi (7,885.38 km) |
| Castellon de la Plana to Smithfield (North Carolina) | 4,147.60 mi (6,674.91 km) |
| Castellon de la Plana to Smithfield (Utah) | 5,353.97 mi (8,616.38 km) |
| Castellon de la Plana to Smithville (Missouri) | 4,756.72 mi (7,655.20 km) |
