| Lanham to Silver Firs (Washington) | 2,319.70 mi (3,733.20 km) |
| Lanham to Silver Spring (Maryland) | 10.00 mi (16.09 km) |
| Lanham to Silver Springs Shores (Florida) | 741.83 mi (1,193.85 km) |
| Lanham to Silverdale (Washington) | 2,344.93 mi (3,773.79 km) |
| Lanham to Silverton (Oregon) | 2,363.59 mi (3,803.83 km) |
| Lanham to Simi Valley (California) | 2,326.07 mi (3,743.45 km) |
| Lanham to Simpsonville (South Carolina) | 418.40 mi (673.35 km) |
| Lanham to Sioux City (Iowa) | 1,049.66 mi (1,689.27 km) |
| Lanham to Sioux Falls (South Dakota) | 1,077.45 mi (1,733.99 km) |
| Lanham to Skokie (Illinois) | 610.15 mi (981.94 km) |
| Lanham to Sleepy Hollow (New York) | 215.34 mi (346.55 km) |
| Lanham to Slidell (Louisiana) | 947.20 mi (1,524.38 km) |
| Lanham to Smithfield (North Carolina) | 252.29 mi (406.01 km) |
| Lanham to Smithfield (Utah) | 1,838.70 mi (2,959.11 km) |
| Lanham to Smithville (Missouri) | 948.71 mi (1,526.81 km) |
