| Piqua to Somersworth (New Hampshire) | 720.76 mi (1,159.95 km) |
| Piqua to Somerton (Arizona) | 1,762.80 mi (2,836.95 km) |
| Piqua to Somerville (Massachusetts) | 699.06 mi (1,125.03 km) |
| Piqua to Somerville (New Jersey) | 507.83 mi (817.28 km) |
| Piqua to Sonoma (California) | 2,033.86 mi (3,273.19 km) |
| Piqua to Soquel (California) | 2,032.99 mi (3,271.77 km) |
| Piqua to South Bend (Indiana) | 149.33 mi (240.33 km) |
| Piqua to South Bradenton (Florida) | 881.88 mi (1,419.25 km) |
| Piqua to South Burlington (Vermont) | 636.47 mi (1,024.29 km) |
| Piqua to South Charleston (West Virginia) | 184.13 mi (296.34 km) |
| Piqua to South Daytona (Florida) | 780.82 mi (1,256.61 km) |
| Piqua to South El Monte (California) | 1,897.84 mi (3,054.28 km) |
| Piqua to South Elgin (Illinois) | 247.13 mi (397.72 km) |
| Piqua to South Euclid (Ohio) | 170.91 mi (275.05 km) |
| Piqua to South Farmingdale (New York) | 568.80 mi (915.39 km) |
