| San Sebastiano al Vesuvio to Silver Firs (Washington) | 5,755.91 mi (9,263.25 km) |
| San Sebastiano al Vesuvio to Silver Spring (Maryland) | 4,601.06 mi (7,404.69 km) |
| San Sebastiano al Vesuvio to Silver Springs Shores (Florida) | 5,239.96 mi (8,432.91 km) |
| San Sebastiano al Vesuvio to Silverdale (Washington) | 5,780.45 mi (9,302.73 km) |
| San Sebastiano al Vesuvio to Silverton (Oregon) | 5,940.36 mi (9,560.08 km) |
| San Sebastiano al Vesuvio to Simi Valley (California) | 6,452.97 mi (10,385.05 km) |
| San Sebastiano al Vesuvio to Simpsonville (South Carolina) | 5,008.99 mi (8,061.19 km) |
| San Sebastiano al Vesuvio to Sioux City (Iowa) | 5,242.63 mi (8,437.19 km) |
| San Sebastiano al Vesuvio to Sioux Falls (South Dakota) | 5,205.88 mi (8,378.05 km) |
| San Sebastiano al Vesuvio to Skokie (Illinois) | 4,929.07 mi (7,932.57 km) |
| San Sebastiano al Vesuvio to Sleepy Hollow (New York) | 4,382.55 mi (7,053.03 km) |
| San Sebastiano al Vesuvio to Slidell (Louisiana) | 5,541.84 mi (8,918.73 km) |
| San Sebastiano al Vesuvio to Smithfield (North Carolina) | 4,800.17 mi (7,725.13 km) |
| San Sebastiano al Vesuvio to Smithfield (Utah) | 5,809.02 mi (9,348.71 km) |
| San Sebastiano al Vesuvio to Smithville (Missouri) | 5,319.38 mi (8,560.71 km) |
