| Port Talbot to Silver Firs (Washington) | 4,661.85 mi (7,502.53 km) |
| Port Talbot to Silver Spring (Maryland) | 3,507.40 mi (5,644.61 km) |
| Port Talbot to Silver Springs Shores (Florida) | 4,181.68 mi (6,729.77 km) |
| Port Talbot to Silverdale (Washington) | 4,687.46 mi (7,543.73 km) |
| Port Talbot to Silverton (Oregon) | 4,839.73 mi (7,788.79 km) |
| Port Talbot to Simi Valley (California) | 5,321.58 mi (8,564.26 km) |
| Port Talbot to Simpsonville (South Carolina) | 3,919.75 mi (6,308.23 km) |
| Port Talbot to Sioux City (Iowa) | 4,106.02 mi (6,608.00 km) |
| Port Talbot to Sioux Falls (South Dakota) | 4,068.63 mi (6,547.83 km) |
| Port Talbot to Skokie (Illinois) | 3,801.02 mi (6,117.14 km) |
| Port Talbot to Sleepy Hollow (New York) | 3,287.13 mi (5,290.12 km) |
| Port Talbot to Slidell (Louisiana) | 4,446.56 mi (7,156.05 km) |
| Port Talbot to Smithfield (North Carolina) | 3,720.71 mi (5,987.91 km) |
| Port Talbot to Smithfield (Utah) | 4,677.91 mi (7,528.36 km) |
| Port Talbot to Smithville (Missouri) | 4,187.61 mi (6,739.31 km) |
