| Piqua to Harrison (Ohio) | 68.06 mi (109.53 km) |
| Piqua to Harrison (Wisconsin) | 347.81 mi (559.74 km) |
| Piqua to Harrisonburg (Virginia) | 310.58 mi (499.83 km) |
| Piqua to Hartford (Connecticut) | 612.96 mi (986.46 km) |
| Piqua to Hartford (Wisconsin) | 305.63 mi (491.87 km) |
| Piqua to Hartselle (Alabama) | 421.46 mi (678.28 km) |
| Piqua to Hartsville (Tennessee) | 279.63 mi (450.01 km) |
| Piqua to Harvey (Illinois) | 204.50 mi (329.11 km) |
| Piqua to Harvey (Louisiana) | 781.43 mi (1,257.58 km) |
| Piqua to Hasbrouck Heights (New Jersey) | 536.22 mi (862.96 km) |
| Piqua to Haslett (Michigan) | 179.96 mi (289.62 km) |
| Piqua to Hastings (Minnesota) | 540.73 mi (870.22 km) |
| Piqua to Hastings (Nebraska) | 744.45 mi (1,198.07 km) |
| Piqua to Hattiesburg (Mississippi) | 673.69 mi (1,084.20 km) |
| Piqua to Hauppauge (New York) | 581.26 mi (935.44 km) |
