| Piqua to Darby (Pennsylvania) | 475.28 mi (764.88 km) |
| Piqua to Dardenne Prairie (Missouri) | 359.18 mi (578.04 km) |
| Piqua to Darien (Illinois) | 224.00 mi (360.49 km) |
| Piqua to Davenport (Iowa) | 346.25 mi (557.23 km) |
| Piqua to Davidson (North Carolina) | 372.47 mi (599.44 km) |
| Piqua to Davie (Florida) | 998.56 mi (1,607.03 km) |
| Piqua to Davis (California) | 1,991.27 mi (3,204.63 km) |
| Piqua to Dayton (Nevada) | 1,866.13 mi (3,003.24 km) |
| Piqua to Dayton (Ohio) | 25.68 mi (41.32 km) |
| Piqua to Daytona Beach (Florida) | 777.32 mi (1,250.98 km) |
| Piqua to De Pere (Wisconsin) | 354.68 mi (570.80 km) |
| Piqua to De Witt (New York) | 466.07 mi (750.07 km) |
| Piqua to Dearborn (Michigan) | 158.70 mi (255.40 km) |
| Piqua to Dearborn Heights (Michigan) | 157.85 mi (254.04 km) |
| Piqua to DeBary (Florida) | 796.03 mi (1,281.09 km) |
