| Prato to Silver Firs (Washington) | 5,491.05 mi (8,836.99 km) |
| Prato to Silver Spring (Maryland) | 4,349.95 mi (7,000.57 km) |
| Prato to Silver Springs Shores (Florida) | 4,999.49 mi (8,045.90 km) |
| Prato to Silverdale (Washington) | 5,515.75 mi (8,876.74 km) |
| Prato to Silverton (Oregon) | 5,674.65 mi (9,132.47 km) |
| Prato to Simi Valley (California) | 6,184.29 mi (9,952.66 km) |
| Prato to Simpsonville (South Carolina) | 4,759.52 mi (7,659.70 km) |
| Prato to Sioux City (Iowa) | 4,976.61 mi (8,009.08 km) |
| Prato to Sioux Falls (South Dakota) | 4,939.26 mi (7,948.97 km) |
| Prato to Skokie (Illinois) | 4,667.15 mi (7,511.06 km) |
| Prato to Sleepy Hollow (New York) | 4,130.74 mi (6,647.79 km) |
| Prato to Slidell (Louisiana) | 5,291.00 mi (8,515.04 km) |
| Prato to Smithfield (North Carolina) | 4,553.28 mi (7,327.80 km) |
| Prato to Smithfield (Utah) | 5,540.34 mi (8,916.32 km) |
| Prato to Smithville (Missouri) | 5,055.99 mi (8,136.83 km) |
