| Piqua to Cervignano del Friuli | 4,622.98 mi (7,439.96 km) |
| Piqua to Cesa | 4,854.89 mi (7,813.19 km) |
| Piqua to Cesano Maderno | 4,461.70 mi (7,180.41 km) |
| Piqua to Cesena | 4,645.06 mi (7,475.51 km) |
| Piqua to Cesenatico | 4,648.79 mi (7,481.50 km) |
| Piqua to Cetraro | 4,988.27 mi (8,027.85 km) |
| Piqua to Cherasco | 4,445.07 mi (7,153.65 km) |
| Piqua to Chiampo | 4,551.47 mi (7,324.89 km) |
| Piqua to Chiaravalle | 4,710.85 mi (7,581.38 km) |
| Piqua to Chiari | 4,495.89 mi (7,235.44 km) |
| Piqua to Chiavari | 4,518.41 mi (7,271.68 km) |
| Piqua to Chieri | 4,429.91 mi (7,129.25 km) |
| Piqua to Chieti | 4,795.47 mi (7,717.57 km) |
| Piqua to Chioggia | 4,604.31 mi (7,409.93 km) |
| Piqua to Chiusi | 4,677.04 mi (7,526.98 km) |
