| Arco to Silver Firs (Washington) | 5,363.98 mi (8,632.49 km) |
| Arco to Silver Spring (Maryland) | 4,273.07 mi (6,876.84 km) |
| Arco to Silver Springs Shores (Florida) | 4,934.12 mi (7,940.69 km) |
| Arco to Silverdale (Washington) | 5,388.46 mi (8,671.88 km) |
| Arco to Silverton (Oregon) | 5,548.82 mi (8,929.97 km) |
| Arco to Simi Valley (California) | 6,069.07 mi (9,767.23 km) |
| Arco to Simpsonville (South Carolina) | 4,684.25 mi (7,538.58 km) |
| Arco to Sioux City (Iowa) | 4,874.70 mi (7,845.07 km) |
| Arco to Sioux Falls (South Dakota) | 4,835.71 mi (7,782.32 km) |
| Arco to Skokie (Illinois) | 4,574.10 mi (7,361.31 km) |
| Arco to Sleepy Hollow (New York) | 4,053.20 mi (6,522.99 km) |
| Arco to Slidell (Louisiana) | 5,213.57 mi (8,390.43 km) |
| Arco to Smithfield (North Carolina) | 4,481.29 mi (7,211.94 km) |
| Arco to Smithfield (Utah) | 5,425.27 mi (8,731.14 km) |
| Arco to Smithville (Missouri) | 4,959.94 mi (7,982.26 km) |
