| Clay to Caltagirone | 5,389.17 mi (8,673.04 km) |
| Clay to Caltanissetta | 5,358.93 mi (8,624.37 km) |
| Clay to Calvisano | 4,912.76 mi (7,906.32 km) |
| Clay to Calvizzano | 5,236.58 mi (8,427.46 km) |
| Clay to Camaiore | 4,958.80 mi (7,980.42 km) |
| Clay to Cameri | 4,835.60 mi (7,782.15 km) |
| Clay to Camisano Vicentino | 4,964.84 mi (7,990.14 km) |
| Clay to Campagna | 5,285.62 mi (8,506.39 km) |
| Clay to Campagnano di Roma | 5,112.50 mi (8,227.77 km) |
| Clay to Campi Bisenzio | 4,998.81 mi (8,044.81 km) |
| Clay to Campi Salentina | 5,423.00 mi (8,727.47 km) |
| Clay to Campiglia Marittima | 5,002.33 mi (8,050.48 km) |
| Clay to Campobasso | 5,232.93 mi (8,421.58 km) |
| Clay to Campobello di Licata | 5,361.30 mi (8,628.18 km) |
| Clay to Campobello di Mazara | 5,293.15 mi (8,518.51 km) |
