| Sluis to Silver Firs (Washington) | 4,865.92 mi (7,830.94 km) |
| Sluis to Silver Spring (Maryland) | 3,806.85 mi (6,126.53 km) |
| Sluis to Silver Springs Shores (Florida) | 4,487.05 mi (7,221.21 km) |
| Sluis to Silverdale (Washington) | 4,890.72 mi (7,870.85 km) |
| Sluis to Silverton (Oregon) | 5,049.10 mi (8,125.75 km) |
| Sluis to Simi Valley (California) | 5,563.56 mi (8,953.68 km) |
| Sluis to Simpsonville (South Carolina) | 4,219.77 mi (6,791.06 km) |
| Sluis to Sioux City (Iowa) | 4,374.99 mi (7,040.87 km) |
| Sluis to Sioux Falls (South Dakota) | 4,334.76 mi (6,976.12 km) |
| Sluis to Skokie (Illinois) | 4,083.56 mi (6,571.85 km) |
| Sluis to Sleepy Hollow (New York) | 3,586.43 mi (5,771.81 km) |
| Sluis to Slidell (Louisiana) | 4,744.29 mi (7,635.19 km) |
| Sluis to Smithfield (North Carolina) | 4,023.17 mi (6,474.66 km) |
| Sluis to Smithfield (Utah) | 4,919.76 mi (7,917.58 km) |
| Sluis to Smithville (Missouri) | 4,465.66 mi (7,186.78 km) |
