| Piqua to Cold Springs (Nevada) | 1,880.83 mi (3,026.90 km) |
| Piqua to Coldwater (Michigan) | 130.17 mi (209.48 km) |
| Piqua to Colesville (Maryland) | 392.54 mi (631.73 km) |
| Piqua to College (Alaska) | 2,989.22 mi (4,810.68 km) |
| Piqua to College Park (Georgia) | 450.26 mi (724.62 km) |
| Piqua to College Park (Maryland) | 397.30 mi (639.39 km) |
| Piqua to College Station (Texas) | 945.84 mi (1,522.18 km) |
| Piqua to Collegedale (Tennessee) | 354.98 mi (571.28 km) |
| Piqua to Colleyville (Texas) | 873.16 mi (1,405.21 km) |
| Piqua to Collierville (Tennessee) | 461.86 mi (743.30 km) |
| Piqua to Collinsville (Illinois) | 323.93 mi (521.31 km) |
| Piqua to Colonia (New Jersey) | 523.29 mi (842.15 km) |
| Piqua to Colonial Heights (Virginia) | 419.40 mi (674.96 km) |
| Piqua to Colonial Park (Pennsylvania) | 392.36 mi (631.44 km) |
| Piqua to Colorado Springs (Colorado) | 1,094.82 mi (1,761.94 km) |
