| Piqua to Commerce (California) | 1,904.73 mi (3,065.36 km) |
| Piqua to Commerce City (Colorado) | 1,087.89 mi (1,750.78 km) |
| Piqua to Compton (California) | 1,911.49 mi (3,076.25 km) |
| Piqua to Comstock Park (Michigan) | 213.18 mi (343.07 km) |
| Piqua to Concord (California) | 2,016.00 mi (3,244.44 km) |
| Piqua to Concord (Missouri) | 345.69 mi (556.34 km) |
| Piqua to Concord (New Hampshire) | 687.38 mi (1,106.22 km) |
| Piqua to Concord (North Carolina) | 383.13 mi (616.58 km) |
| Piqua to Conneaut (Ohio) | 227.49 mi (366.10 km) |
| Piqua to Connersville (Indiana) | 58.46 mi (94.08 km) |
| Piqua to Conroe (Texas) | 927.54 mi (1,492.73 km) |
| Piqua to Converse (Texas) | 1,082.28 mi (1,741.76 km) |
| Piqua to Conway (Arkansas) | 570.20 mi (917.65 km) |
| Piqua to Conway (Florida) | 822.03 mi (1,322.93 km) |
| Piqua to Conway (South Carolina) | 521.76 mi (839.70 km) |
