| Johnston to Silver Firs (Washington) | 1,448.55 mi (2,331.21 km) |
| Johnston to Silver Spring (Maryland) | 897.41 mi (1,444.24 km) |
| Johnston to Silver Springs Shores (Florida) | 1,088.67 mi (1,752.05 km) |
| Johnston to Silverdale (Washington) | 1,471.74 mi (2,368.53 km) |
| Johnston to Silverton (Oregon) | 1,469.71 mi (2,365.27 km) |
| Johnston to Simi Valley (California) | 1,449.87 mi (2,333.35 km) |
| Johnston to Simpsonville (South Carolina) | 785.54 mi (1,264.21 km) |
| Johnston to Sioux City (Iowa) | 147.59 mi (237.53 km) |
| Johnston to Sioux Falls (South Dakota) | 199.23 mi (320.63 km) |
| Johnston to Skokie (Illinois) | 308.74 mi (496.87 km) |
| Johnston to Sleepy Hollow (New York) | 1,027.51 mi (1,653.62 km) |
| Johnston to Slidell (Louisiana) | 817.79 mi (1,316.10 km) |
| Johnston to Smithfield (North Carolina) | 931.53 mi (1,499.15 km) |
| Johnston to Smithfield (Utah) | 931.30 mi (1,498.79 km) |
| Johnston to Smithville (Missouri) | 165.02 mi (265.57 km) |
