| Piqua to Chicago Ridge (Illinois) | 213.45 mi (343.52 km) |
| Piqua to Chickasha (Oklahoma) | 827.88 mi (1,332.34 km) |
| Piqua to Chico (California) | 1,975.09 mi (3,178.60 km) |
| Piqua to Chicopee (Massachusetts) | 622.52 mi (1,001.85 km) |
| Piqua to Chillicothe (Ohio) | 86.91 mi (139.87 km) |
| Piqua to Chillum (Maryland) | 395.43 mi (636.38 km) |
| Piqua to Chino (California) | 1,879.39 mi (3,024.59 km) |
| Piqua to Chino Hills (California) | 1,883.44 mi (3,031.11 km) |
| Piqua to Chino Valley (Arizona) | 1,582.02 mi (2,546.02 km) |
| Piqua to Chippewa Falls (Wisconsin) | 491.22 mi (790.54 km) |
| Piqua to Choctaw (Oklahoma) | 779.60 mi (1,254.64 km) |
| Piqua to Chowchilla (California) | 1,940.62 mi (3,123.13 km) |
| Piqua to Christiansburg (Virginia) | 293.54 mi (472.41 km) |
| Piqua to Chubbuck (Idaho) | 1,464.92 mi (2,357.57 km) |
| Piqua to Chula Vista (California) | 1,883.44 mi (3,031.10 km) |
