| Plovdiv to Silver Firs (Washington) | 5,897.56 mi (9,491.21 km) |
| Plovdiv to Silver Spring (Maryland) | 4,992.20 mi (8,034.16 km) |
| Plovdiv to Silver Springs Shores (Florida) | 5,663.70 mi (9,114.84 km) |
| Plovdiv to Silverdale (Washington) | 5,920.01 mi (9,527.34 km) |
| Plovdiv to Silverton (Oregon) | 6,090.60 mi (9,801.88 km) |
| Plovdiv to Simi Valley (California) | 6,673.39 mi (10,739.79 km) |
| Plovdiv to Simpsonville (South Carolina) | 5,404.75 mi (8,698.10 km) |
| Plovdiv to Sioux City (Iowa) | 5,539.53 mi (8,915.00 km) |
| Plovdiv to Sioux Falls (South Dakota) | 5,495.41 mi (8,844.01 km) |
| Plovdiv to Skokie (Illinois) | 5,264.17 mi (8,471.87 km) |
| Plovdiv to Sleepy Hollow (New York) | 4,771.86 mi (7,679.56 km) |
| Plovdiv to Slidell (Louisiana) | 5,930.55 mi (9,544.31 km) |
| Plovdiv to Smithfield (North Carolina) | 5,205.63 mi (8,377.66 km) |
| Plovdiv to Smithfield (Utah) | 6,034.64 mi (9,711.81 km) |
| Plovdiv to Smithville (Missouri) | 5,641.29 mi (9,078.78 km) |
