| Louth to Silver Firs (Washington) | 4,666.36 mi (7,509.77 km) |
| Louth to Silver Spring (Maryland) | 3,625.03 mi (5,833.92 km) |
| Louth to Silver Springs Shores (Florida) | 4,313.20 mi (6,941.43 km) |
| Louth to Silverdale (Washington) | 4,691.26 mi (7,549.86 km) |
| Louth to Silverton (Oregon) | 4,848.94 mi (7,803.61 km) |
| Louth to Simi Valley (California) | 5,361.81 mi (8,629.01 km) |
| Louth to Simpsonville (South Carolina) | 4,038.31 mi (6,499.02 km) |
| Louth to Sioux City (Iowa) | 4,176.70 mi (6,721.74 km) |
| Louth to Sioux Falls (South Dakota) | 4,135.83 mi (6,655.97 km) |
| Louth to Skokie (Illinois) | 3,889.89 mi (6,260.18 km) |
| Louth to Sleepy Hollow (New York) | 3,404.63 mi (5,479.22 km) |
| Louth to Slidell (Louisiana) | 4,560.14 mi (7,338.83 km) |
| Louth to Smithfield (North Carolina) | 3,844.87 mi (6,187.72 km) |
| Louth to Smithfield (Utah) | 4,718.03 mi (7,592.94 km) |
| Louth to Smithville (Missouri) | 4,270.03 mi (6,871.95 km) |
