| Piqua to Chojnice | 4,471.15 mi (7,195.63 km) |
| Piqua to Chojnow | 4,509.12 mi (7,256.72 km) |
| Piqua to Chorzow | 4,655.30 mi (7,491.98 km) |
| Piqua to Choszczno | 4,418.36 mi (7,110.67 km) |
| Piqua to Chrzanow | 4,678.15 mi (7,528.75 km) |
| Piqua to Ciechanow | 4,608.35 mi (7,416.42 km) |
| Piqua to Ciechocinek | 4,545.15 mi (7,314.72 km) |
| Piqua to Cieszyn | 4,666.44 mi (7,509.92 km) |
| Piqua to Czarna Bialostocka | 4,677.79 mi (7,528.18 km) |
| Piqua to Czarnkow | 4,468.40 mi (7,191.19 km) |
| Piqua to Czechowice-Dziedzice | 4,673.16 mi (7,520.72 km) |
| Piqua to Czeladz | 4,658.68 mi (7,497.41 km) |
| Piqua to Czersk Pomorski | 4,481.85 mi (7,212.85 km) |
| Piqua to Czestochowa | 4,640.78 mi (7,468.61 km) |
| Piqua to Czluchow | 4,466.23 mi (7,187.71 km) |
