| Piqua to Duluth (Minnesota) | 604.59 mi (973.00 km) |
| Piqua to Dumas (Texas) | 1,007.20 mi (1,620.93 km) |
| Piqua to Dumont (New Jersey) | 540.71 mi (870.19 km) |
| Piqua to Duncan (Oklahoma) | 844.05 mi (1,358.37 km) |
| Piqua to Duncanville (Texas) | 873.31 mi (1,405.46 km) |
| Piqua to Dundalk (Maryland) | 416.25 mi (669.89 km) |
| Piqua to Dunedin (Florida) | 841.36 mi (1,354.04 km) |
| Piqua to Dunkirk (New York) | 301.38 mi (485.02 km) |
| Piqua to Dunmore (Pennsylvania) | 460.02 mi (740.32 km) |
| Piqua to Dunwoody (Georgia) | 429.00 mi (690.41 km) |
| Piqua to Durango (Colorado) | 1,285.84 mi (2,069.35 km) |
| Piqua to Durant (Oklahoma) | 792.22 mi (1,274.95 km) |
| Piqua to Durham (North Carolina) | 409.12 mi (658.42 km) |
| Piqua to Dyer (Indiana) | 194.41 mi (312.87 km) |
| Piqua to Dyersburg (Tennessee) | 397.75 mi (640.12 km) |
