| Piqua to Corato | 4,937.31 mi (7,945.83 km) |
| Piqua to Corbetta | 4,458.40 mi (7,175.09 km) |
| Piqua to Corciano | 4,686.25 mi (7,541.79 km) |
| Piqua to Cordenons | 4,591.52 mi (7,389.35 km) |
| Piqua to Cori | 4,771.92 mi (7,679.66 km) |
| Piqua to Coriano | 4,666.36 mi (7,509.77 km) |
| Piqua to Corigliano Calabro | 5,007.84 mi (8,059.34 km) |
| Piqua to Corleone | 4,945.30 mi (7,958.70 km) |
| Piqua to Cormano | 4,465.54 mi (7,186.60 km) |
| Piqua to Cornaredo | 4,461.94 mi (7,180.80 km) |
| Piqua to Cornate d'Adda | 4,474.08 mi (7,200.33 km) |
| Piqua to Cornedo Vicentino | 4,551.62 mi (7,325.12 km) |
| Piqua to Correggio | 4,560.89 mi (7,340.04 km) |
| Piqua to Corridonia | 4,732.36 mi (7,616.00 km) |
| Piqua to Corsico | 4,467.82 mi (7,190.26 km) |
