| Piqua to Delaware (Ohio) | 62.42 mi (100.46 km) |
| Piqua to Delhi (California) | 1,962.48 mi (3,158.31 km) |
| Piqua to Delray Beach (Florida) | 975.87 mi (1,570.52 km) |
| Piqua to Deltona (Florida) | 795.77 mi (1,280.66 km) |
| Piqua to Deming (New Mexico) | 1,413.90 mi (2,275.45 km) |
| Piqua to Denison (Texas) | 810.24 mi (1,303.96 km) |
| Piqua to Dent (Ohio) | 69.86 mi (112.43 km) |
| Piqua to Denton (Texas) | 858.93 mi (1,382.31 km) |
| Piqua to Dentsville (South Carolina) | 457.12 mi (735.66 km) |
| Piqua to Denver (Colorado) | 1,090.58 mi (1,755.11 km) |
| Piqua to Depew (New York) | 344.12 mi (553.81 km) |
| Piqua to Derby (Connecticut) | 589.49 mi (948.68 km) |
| Piqua to Derby (Kansas) | 721.90 mi (1,161.78 km) |
| Piqua to Des Moines (Iowa) | 498.93 mi (802.95 km) |
| Piqua to Des Moines (Washington) | 1,943.16 mi (3,127.21 km) |
