| Ronkonkoma to Silver Firs (Washington) | 2,429.07 mi (3,909.21 km) |
| Ronkonkoma to Silver Spring (Maryland) | 241.06 mi (387.95 km) |
| Ronkonkoma to Silver Springs Shores (Florida) | 950.58 mi (1,529.81 km) |
| Ronkonkoma to Silverdale (Washington) | 2,455.36 mi (3,951.52 km) |
| Ronkonkoma to Silverton (Oregon) | 2,490.28 mi (4,007.72 km) |
| Ronkonkoma to Simi Valley (California) | 2,511.44 mi (4,041.77 km) |
| Ronkonkoma to Simpsonville (South Carolina) | 651.26 mi (1,048.09 km) |
| Ronkonkoma to Sioux City (Iowa) | 1,203.02 mi (1,936.08 km) |
| Ronkonkoma to Sioux Falls (South Dakota) | 1,219.29 mi (1,962.26 km) |
| Ronkonkoma to Skokie (Illinois) | 761.08 mi (1,224.84 km) |
| Ronkonkoma to Sleepy Hollow (New York) | 43.86 mi (70.58 km) |
| Ronkonkoma to Slidell (Louisiana) | 1,181.73 mi (1,901.81 km) |
| Ronkonkoma to Smithfield (North Carolina) | 462.61 mi (744.49 km) |
| Ronkonkoma to Smithfield (Utah) | 1,992.46 mi (3,206.56 km) |
| Ronkonkoma to Smithville (Missouri) | 1,135.04 mi (1,826.67 km) |
