| Abertawe to Silver Firs (Washington) | 4,656.31 mi (7,493.61 km) |
| Abertawe to Silver Spring (Maryland) | 3,500.65 mi (5,633.76 km) |
| Abertawe to Silver Springs Shores (Florida) | 4,174.96 mi (6,718.95 km) |
| Abertawe to Silverdale (Washington) | 4,681.93 mi (7,534.83 km) |
| Abertawe to Silverton (Oregon) | 4,834.09 mi (7,779.72 km) |
| Abertawe to Simi Valley (California) | 5,315.43 mi (8,554.36 km) |
| Abertawe to Simpsonville (South Carolina) | 3,913.01 mi (6,297.38 km) |
| Abertawe to Sioux City (Iowa) | 4,099.53 mi (6,597.55 km) |
| Abertawe to Sioux Falls (South Dakota) | 4,062.18 mi (6,537.44 km) |
| Abertawe to Skokie (Illinois) | 3,794.38 mi (6,106.46 km) |
| Abertawe to Sleepy Hollow (New York) | 3,280.39 mi (5,279.27 km) |
| Abertawe to Slidell (Louisiana) | 4,439.82 mi (7,145.20 km) |
| Abertawe to Smithfield (North Carolina) | 3,713.97 mi (5,977.06 km) |
| Abertawe to Smithfield (Utah) | 4,671.77 mi (7,518.49 km) |
| Abertawe to Smithville (Missouri) | 4,181.02 mi (6,728.70 km) |
