| Leiden to Silver Firs (Washington) | 4,845.02 mi (7,797.31 km) |
| Leiden to Silver Spring (Maryland) | 3,829.91 mi (6,163.65 km) |
| Leiden to Silver Springs Shores (Florida) | 4,516.02 mi (7,267.83 km) |
| Leiden to Silverdale (Washington) | 4,869.55 mi (7,836.78 km) |
| Leiden to Silverton (Oregon) | 5,029.72 mi (8,094.55 km) |
| Leiden to Simi Valley (California) | 5,555.15 mi (8,940.16 km) |
| Leiden to Simpsonville (South Carolina) | 4,243.14 mi (6,828.68 km) |
| Leiden to Sioux City (Iowa) | 4,378.95 mi (7,047.24 km) |
| Leiden to Sioux Falls (South Dakota) | 4,337.39 mi (6,980.36 km) |
| Leiden to Skokie (Illinois) | 4,094.81 mi (6,589.95 km) |
| Leiden to Sleepy Hollow (New York) | 3,609.50 mi (5,808.93 km) |
| Leiden to Slidell (Louisiana) | 4,765.45 mi (7,669.24 km) |
| Leiden to Smithfield (North Carolina) | 4,048.96 mi (6,516.18 km) |
| Leiden to Smithfield (Utah) | 4,911.75 mi (7,904.70 km) |
| Leiden to Smithville (Missouri) | 4,474.16 mi (7,200.47 km) |
