| South Plainfield to Siloam Springs (Arkansas) | 1,128.17 mi (1,815.61 km) |
| South Plainfield to Silver Firs (Washington) | 2,377.16 mi (3,825.66 km) |
| South Plainfield to Silver Spring (Maryland) | 175.86 mi (283.02 km) |
| South Plainfield to Silver Springs Shores (Florida) | 900.73 mi (1,449.58 km) |
| South Plainfield to Silverdale (Washington) | 2,403.23 mi (3,867.63 km) |
| South Plainfield to Silverton (Oregon) | 2,434.70 mi (3,918.27 km) |
| South Plainfield to Simi Valley (California) | 2,445.27 mi (3,935.28 km) |
| South Plainfield to Simpsonville (South Carolina) | 588.74 mi (947.49 km) |
| South Plainfield to Sioux City (Iowa) | 1,141.01 mi (1,836.29 km) |
| South Plainfield to Sioux Falls (South Dakota) | 1,159.34 mi (1,865.77 km) |
| South Plainfield to Skokie (Illinois) | 698.19 mi (1,123.63 km) |
| South Plainfield to Sleepy Hollow (New York) | 45.72 mi (73.59 km) |
| South Plainfield to Slidell (Louisiana) | 1,116.69 mi (1,797.15 km) |
| South Plainfield to Smithfield (North Carolina) | 409.93 mi (659.71 km) |
| South Plainfield to Smithfield (Utah) | 1,931.26 mi (3,108.06 km) |
