| Opovo to Silver Firs (Washington) | 5,628.73 mi (9,058.56 km) |
| Opovo to Silver Spring (Maryland) | 4,699.94 mi (7,563.83 km) |
| Opovo to Silver Springs Shores (Florida) | 5,375.46 mi (8,650.96 km) |
| Opovo to Silverdale (Washington) | 5,651.70 mi (9,095.53 km) |
| Opovo to Silverton (Oregon) | 5,820.11 mi (9,366.57 km) |
| Opovo to Simi Valley (California) | 6,390.02 mi (10,283.75 km) |
| Opovo to Simpsonville (South Carolina) | 5,112.74 mi (8,228.16 km) |
| Opovo to Sioux City (Iowa) | 5,246.35 mi (8,443.18 km) |
| Opovo to Sioux Falls (South Dakota) | 5,202.74 mi (8,373.00 km) |
| Opovo to Skokie (Illinois) | 4,969.46 mi (7,997.58 km) |
| Opovo to Sleepy Hollow (New York) | 4,479.55 mi (7,209.14 km) |
| Opovo to Slidell (Louisiana) | 5,637.61 mi (9,072.85 km) |
| Opovo to Smithfield (North Carolina) | 4,914.91 mi (7,909.78 km) |
| Opovo to Smithfield (Utah) | 5,749.77 mi (9,253.37 km) |
| Opovo to Smithville (Missouri) | 5,346.90 mi (8,605.01 km) |
