| Piqua to Silver Firs (Washington) | 1,936.16 mi (3,115.95 km) |
| Piqua to Silver Spring (Maryland) | 392.65 mi (631.91 km) |
| Piqua to Silver Springs Shores (Florida) | 773.03 mi (1,244.07 km) |
| Piqua to Silverdale (Washington) | 1,960.58 mi (3,155.25 km) |
| Piqua to Silverton (Oregon) | 1,970.04 mi (3,170.47 km) |
| Piqua to Simi Valley (California) | 1,929.07 mi (3,104.54 km) |
| Piqua to Simpsonville (South Carolina) | 390.13 mi (627.85 km) |
| Piqua to Sioux City (Iowa) | 650.10 mi (1,046.23 km) |
| Piqua to Sioux Falls (South Dakota) | 683.21 mi (1,099.52 km) |
| Piqua to Skokie (Illinois) | 223.81 mi (360.19 km) |
| Piqua to Sleepy Hollow (New York) | 547.49 mi (881.10 km) |
| Piqua to Slidell (Louisiana) | 749.27 mi (1,205.83 km) |
| Piqua to Smithfield (North Carolina) | 453.81 mi (730.33 km) |
| Piqua to Smithfield (Utah) | 1,436.95 mi (2,312.55 km) |
| Piqua to Smithville (Missouri) | 550.79 mi (886.42 km) |
