| Barbastro to Silver Firs (Washington) | 5,297.82 mi (8,526.02 km) |
| Barbastro to Silver Spring (Maryland) | 3,913.86 mi (6,298.74 km) |
| Barbastro to Silver Springs Shores (Florida) | 4,526.45 mi (7,284.61 km) |
| Barbastro to Silverdale (Washington) | 5,324.17 mi (8,568.43 km) |
| Barbastro to Silverton (Oregon) | 5,468.91 mi (8,801.36 km) |
| Barbastro to Simi Valley (California) | 5,898.98 mi (9,493.49 km) |
| Barbastro to Simpsonville (South Carolina) | 4,315.55 mi (6,945.20 km) |
| Barbastro to Sioux City (Iowa) | 4,631.58 mi (7,453.81 km) |
| Barbastro to Sioux Falls (South Dakota) | 4,602.37 mi (7,406.80 km) |
| Barbastro to Skokie (Illinois) | 4,286.35 mi (6,898.22 km) |
| Barbastro to Sleepy Hollow (New York) | 3,698.47 mi (5,952.12 km) |
| Barbastro to Slidell (Louisiana) | 4,850.37 mi (7,805.91 km) |
| Barbastro to Smithfield (North Carolina) | 4,100.91 mi (6,599.78 km) |
| Barbastro to Smithfield (Utah) | 5,260.01 mi (8,465.17 km) |
| Barbastro to Smithville (Missouri) | 4,684.28 mi (7,538.62 km) |
