| Piqua to Channelview (Texas) | 942.42 mi (1,516.68 km) |
| Piqua to Chantilly (Virginia) | 372.64 mi (599.71 km) |
| Piqua to Chaparral (New Mexico) | 1,353.22 mi (2,177.80 km) |
| Piqua to Chapel Hill (North Carolina) | 406.52 mi (654.23 km) |
| Piqua to Charleston (Illinois) | 213.77 mi (344.04 km) |
| Piqua to Charleston (South Carolina) | 559.43 mi (900.31 km) |
| Piqua to Charleston (West Virginia) | 187.16 mi (301.21 km) |
| Piqua to Charlotte (North Carolina) | 389.09 mi (626.18 km) |
| Piqua to Charlottesville (Virginia) | 341.48 mi (549.56 km) |
| Piqua to Chaska (Minnesota) | 575.29 mi (925.84 km) |
| Piqua to Chatham (Illinois) | 290.62 mi (467.72 km) |
| Piqua to Chattanooga (Tennessee) | 355.58 mi (572.24 km) |
| Piqua to Cheat Lake (West Virginia) | 234.91 mi (378.05 km) |
| Piqua to Chelsea (Alabama) | 489.62 mi (787.97 km) |
| Piqua to Chelsea (Massachusetts) | 702.59 mi (1,130.71 km) |
