| Popovo to Silver Firs (Washington) | 5,847.35 mi (9,410.40 km) |
| Popovo to Silver Spring (Maryland) | 5,001.96 mi (8,049.87 km) |
| Popovo to Silver Springs Shores (Florida) | 5,682.16 mi (9,144.55 km) |
| Popovo to Silverdale (Washington) | 5,869.36 mi (9,445.83 km) |
| Popovo to Silverton (Oregon) | 6,041.65 mi (9,723.10 km) |
| Popovo to Simi Valley (California) | 6,637.50 mi (10,682.02 km) |
| Popovo to Simpsonville (South Carolina) | 5,415.08 mi (8,714.73 km) |
| Popovo to Sioux City (Iowa) | 5,523.35 mi (8,888.98 km) |
| Popovo to Sioux Falls (South Dakota) | 5,477.56 mi (8,815.29 km) |
| Popovo to Skokie (Illinois) | 5,258.10 mi (8,462.10 km) |
| Popovo to Sleepy Hollow (New York) | 4,781.53 mi (7,695.13 km) |
| Popovo to Slidell (Louisiana) | 5,937.88 mi (9,556.09 km) |
| Popovo to Smithfield (North Carolina) | 5,219.22 mi (8,399.52 km) |
| Popovo to Smithfield (Utah) | 6,001.17 mi (9,657.95 km) |
| Popovo to Smithville (Missouri) | 5,631.09 mi (9,062.36 km) |
