| Piqua to Hamtramck (Michigan) | 166.92 mi (268.63 km) |
| Piqua to Hanahan (South Carolina) | 551.47 mi (887.50 km) |
| Piqua to Hanford (California) | 1,926.87 mi (3,101.00 km) |
| Piqua to Hannibal (Missouri) | 379.93 mi (611.44 km) |
| Piqua to Hanover (Pennsylvania) | 385.00 mi (619.59 km) |
| Piqua to Hanover Park (Illinois) | 239.32 mi (385.15 km) |
| Piqua to Happy Valley (Oregon) | 1,954.97 mi (3,146.22 km) |
| Piqua to Harker Heights (Texas) | 978.55 mi (1,574.82 km) |
| Piqua to Harlingen (Texas) | 1,236.09 mi (1,989.29 km) |
| Piqua to Harper Woods (Michigan) | 172.21 mi (277.14 km) |
| Piqua to Harrisburg (North Carolina) | 387.66 mi (623.88 km) |
| Piqua to Harrisburg (Pennsylvania) | 388.31 mi (624.92 km) |
| Piqua to Harrison (Arkansas) | 552.00 mi (888.35 km) |
| Piqua to Harrison (New Jersey) | 531.87 mi (855.96 km) |
| Piqua to Harrison (New York) | 555.18 mi (893.48 km) |
