| Castel Maggiore to Silver Firs (Washington) | 5,456.55 mi (8,781.47 km) |
| Castel Maggiore to Silver Spring (Maryland) | 4,338.49 mi (6,982.13 km) |
| Castel Maggiore to Silver Springs Shores (Florida) | 4,992.67 mi (8,034.93 km) |
| Castel Maggiore to Silverdale (Washington) | 5,481.12 mi (8,821.02 km) |
| Castel Maggiore to Silverton (Oregon) | 5,640.86 mi (9,078.09 km) |
| Castel Maggiore to Simi Valley (California) | 6,156.09 mi (9,907.27 km) |
| Castel Maggiore to Simpsonville (South Carolina) | 4,748.76 mi (7,642.39 km) |
| Castel Maggiore to Sioux City (Iowa) | 4,954.59 mi (7,973.65 km) |
| Castel Maggiore to Sioux Falls (South Dakota) | 4,916.50 mi (7,912.34 km) |
| Castel Maggiore to Skokie (Illinois) | 4,649.00 mi (7,481.85 km) |
| Castel Maggiore to Sleepy Hollow (New York) | 4,118.98 mi (6,628.86 km) |
| Castel Maggiore to Slidell (Louisiana) | 5,279.43 mi (8,496.42 km) |
| Castel Maggiore to Smithfield (North Carolina) | 4,543.80 mi (7,312.55 km) |
| Castel Maggiore to Smithfield (Utah) | 5,512.18 mi (8,870.99 km) |
| Castel Maggiore to Smithville (Missouri) | 5,036.58 mi (8,105.59 km) |
