| Leek to Silver Firs (Washington) | 4,628.41 mi (7,448.71 km) |
| Leek to Silver Spring (Maryland) | 3,550.26 mi (5,713.59 km) |
| Leek to Silver Springs Shores (Florida) | 4,235.26 mi (6,815.99 km) |
| Leek to Silverdale (Washington) | 4,653.60 mi (7,489.24 km) |
| Leek to Silverton (Oregon) | 4,809.28 mi (7,739.79 km) |
| Leek to Simi Valley (California) | 5,311.08 mi (8,547.36 km) |
| Leek to Simpsonville (South Carolina) | 3,963.41 mi (6,378.49 km) |
| Leek to Sioux City (Iowa) | 4,115.49 mi (6,623.24 km) |
| Leek to Sioux Falls (South Dakota) | 4,075.71 mi (6,559.22 km) |
| Leek to Skokie (Illinois) | 3,823.05 mi (6,152.61 km) |
| Leek to Sleepy Hollow (New York) | 3,329.84 mi (5,358.85 km) |
| Leek to Slidell (Louisiana) | 4,486.62 mi (7,220.52 km) |
| Leek to Smithfield (North Carolina) | 3,768.56 mi (6,064.91 km) |
| Leek to Smithfield (Utah) | 4,667.14 mi (7,511.03 km) |
| Leek to Smithville (Missouri) | 4,205.23 mi (6,767.66 km) |
