| Oristano to Silver Firs (Washington) | 5,662.98 mi (9,113.68 km) |
| Oristano to Silver Spring (Maryland) | 4,373.44 mi (7,038.37 km) |
| Oristano to Silver Springs Shores (Florida) | 4,991.32 mi (8,032.75 km) |
| Oristano to Silverdale (Washington) | 5,688.50 mi (9,154.76 km) |
| Oristano to Silverton (Oregon) | 5,841.12 mi (9,400.38 km) |
| Oristano to Simi Valley (California) | 6,310.73 mi (10,156.13 km) |
| Oristano to Simpsonville (South Carolina) | 4,776.90 mi (7,687.67 km) |
| Oristano to Sioux City (Iowa) | 5,065.36 mi (8,151.91 km) |
| Oristano to Sioux Falls (South Dakota) | 5,033.03 mi (8,099.88 km) |
| Oristano to Skokie (Illinois) | 4,731.91 mi (7,615.27 km) |
| Oristano to Sleepy Hollow (New York) | 4,157.06 mi (6,690.13 km) |
| Oristano to Slidell (Louisiana) | 5,311.50 mi (8,548.03 km) |
| Oristano to Smithfield (North Carolina) | 4,563.45 mi (7,344.16 km) |
| Oristano to Smithfield (Utah) | 5,668.29 mi (9,122.22 km) |
| Oristano to Smithville (Missouri) | 5,127.50 mi (8,251.91 km) |
