| Castelli Calepio to Silver Firs (Washington) | 5,356.88 mi (8,621.07 km) |
| Castelli Calepio to Silver Spring (Maryland) | 4,240.46 mi (6,824.37 km) |
| Castelli Calepio to Silver Springs Shores (Florida) | 4,897.97 mi (7,882.53 km) |
| Castelli Calepio to Silverdale (Washington) | 5,381.54 mi (8,660.76 km) |
| Castelli Calepio to Silverton (Oregon) | 5,540.72 mi (8,916.92 km) |
| Castelli Calepio to Simi Valley (California) | 6,053.70 mi (9,742.48 km) |
| Castelli Calepio to Simpsonville (South Carolina) | 4,651.16 mi (7,485.31 km) |
| Castelli Calepio to Sioux City (Iowa) | 4,852.15 mi (7,808.79 km) |
| Castelli Calepio to Sioux Falls (South Dakota) | 4,813.95 mi (7,747.31 km) |
| Castelli Calepio to Skokie (Illinois) | 4,547.59 mi (7,318.64 km) |
| Castelli Calepio to Sleepy Hollow (New York) | 4,020.79 mi (6,470.83 km) |
| Castelli Calepio to Slidell (Louisiana) | 5,181.26 mi (8,338.43 km) |
| Castelli Calepio to Smithfield (North Carolina) | 4,447.11 mi (7,156.94 km) |
| Castelli Calepio to Smithfield (Utah) | 5,409.77 mi (8,706.19 km) |
| Castelli Calepio to Smithville (Missouri) | 4,934.74 mi (7,941.70 km) |
