| San Gregorio di Catania to Silver Firs (Washington) | 5,974.76 mi (9,615.44 km) |
| San Gregorio di Catania to Silver Spring (Maryland) | 4,757.39 mi (7,656.28 km) |
| San Gregorio di Catania to Silver Springs Shores (Florida) | 5,378.17 mi (8,655.33 km) |
| San Gregorio di Catania to Silverdale (Washington) | 5,999.53 mi (9,655.31 km) |
| San Gregorio di Catania to Silverton (Oregon) | 6,157.80 mi (9,910.02 km) |
| San Gregorio di Catania to Simi Valley (California) | 6,657.39 mi (10,714.03 km) |
| San Gregorio di Catania to Simpsonville (South Carolina) | 5,161.87 mi (8,307.23 km) |
| San Gregorio di Catania to Sioux City (Iowa) | 5,430.95 mi (8,740.27 km) |
| San Gregorio di Catania to Sioux Falls (South Dakota) | 5,396.38 mi (8,684.63 km) |
| San Gregorio di Catania to Skokie (Illinois) | 5,106.28 mi (8,217.76 km) |
| San Gregorio di Catania to Sleepy Hollow (New York) | 4,540.44 mi (7,307.13 km) |
| San Gregorio di Catania to Slidell (Louisiana) | 5,696.26 mi (9,167.25 km) |
| San Gregorio di Catania to Smithfield (North Carolina) | 4,949.15 mi (7,964.89 km) |
| San Gregorio di Catania to Smithfield (Utah) | 6,013.63 mi (9,678.00 km) |
| San Gregorio di Catania to Smithville (Missouri) | 5,499.87 mi (8,851.18 km) |
