| Barcelona to Silver Firs (Washington) | 5,395.55 mi (8,683.30 km) |
| Barcelona to Silver Spring (Maryland) | 4,028.75 mi (6,483.65 km) |
| Barcelona to Silver Springs Shores (Florida) | 4,641.11 mi (7,469.14 km) |
| Barcelona to Silverdale (Washington) | 5,421.74 mi (8,725.45 km) |
| Barcelona to Silverton (Oregon) | 5,568.20 mi (8,961.15 km) |
| Barcelona to Simi Valley (California) | 6,006.35 mi (9,666.29 km) |
| Barcelona to Simpsonville (South Carolina) | 4,430.54 mi (7,130.26 km) |
| Barcelona to Sioux City (Iowa) | 4,742.79 mi (7,632.78 km) |
| Barcelona to Sioux Falls (South Dakota) | 4,713.01 mi (7,584.86 km) |
| Barcelona to Skokie (Illinois) | 4,399.49 mi (7,080.30 km) |
| Barcelona to Sleepy Hollow (New York) | 3,813.29 mi (6,136.89 km) |
| Barcelona to Slidell (Louisiana) | 4,965.35 mi (7,990.96 km) |
| Barcelona to Smithfield (North Carolina) | 4,215.91 mi (6,784.85 km) |
| Barcelona to Smithfield (Utah) | 5,366.56 mi (8,636.64 km) |
| Barcelona to Smithville (Missouri) | 4,797.09 mi (7,720.17 km) |
