| Blackrock to Silver Firs (Washington) | 4,506.91 mi (7,253.17 km) |
| Blackrock to Silver Spring (Maryland) | 3,380.56 mi (5,440.49 km) |
| Blackrock to Silver Springs Shores (Florida) | 4,063.54 mi (6,539.64 km) |
| Blackrock to Silverdale (Washington) | 4,532.51 mi (7,294.37 km) |
| Blackrock to Silverton (Oregon) | 4,684.86 mi (7,539.56 km) |
| Blackrock to Simi Valley (California) | 5,169.47 mi (8,319.46 km) |
| Blackrock to Simpsonville (South Carolina) | 3,793.56 mi (6,105.15 km) |
| Blackrock to Sioux City (Iowa) | 3,960.14 mi (6,373.23 km) |
| Blackrock to Sioux Falls (South Dakota) | 3,921.79 mi (6,311.52 km) |
| Blackrock to Skokie (Illinois) | 3,660.99 mi (5,891.80 km) |
| Blackrock to Sleepy Hollow (New York) | 3,160.14 mi (5,085.76 km) |
| Blackrock to Slidell (Louisiana) | 4,317.81 mi (6,948.84 km) |
| Blackrock to Smithfield (North Carolina) | 3,597.76 mi (5,790.03 km) |
| Blackrock to Smithfield (Utah) | 4,525.66 mi (7,283.35 km) |
| Blackrock to Smithville (Missouri) | 4,045.41 mi (6,510.46 km) |
