| Blackburn to Silver Firs (Washington) | 4,582.24 mi (7,374.40 km) |
| Blackburn to Silver Spring (Maryland) | 3,520.11 mi (5,665.07 km) |
| Blackburn to Silver Springs Shores (Florida) | 4,208.38 mi (6,772.73 km) |
| Blackburn to Silverdale (Washington) | 4,607.37 mi (7,414.85 km) |
| Blackburn to Silverton (Oregon) | 4,763.43 mi (7,665.99 km) |
| Blackburn to Simi Valley (California) | 5,268.01 mi (8,478.04 km) |
| Blackburn to Simpsonville (South Carolina) | 3,933.38 mi (6,330.16 km) |
| Blackburn to Sioux City (Iowa) | 4,076.44 mi (6,560.39 km) |
| Blackburn to Sioux Falls (South Dakota) | 4,036.15 mi (6,495.55 km) |
| Blackburn to Skokie (Illinois) | 3,787.01 mi (6,094.61 km) |
| Blackburn to Sleepy Hollow (New York) | 3,299.71 mi (5,310.37 km) |
| Blackburn to Slidell (Louisiana) | 4,455.37 mi (7,170.23 km) |
| Blackburn to Smithfield (North Carolina) | 3,739.91 mi (6,018.80 km) |
| Blackburn to Smithfield (Utah) | 4,624.09 mi (7,441.76 km) |
| Blackburn to Smithville (Missouri) | 4,168.03 mi (6,707.79 km) |
