| Clay to Collegno | 4,802.96 mi (7,729.62 km) |
| Clay to Cologno al Serio | 4,877.54 mi (7,849.64 km) |
| Clay to Cologno Monzese | 4,861.44 mi (7,823.73 km) |
| Clay to Colorno | 4,928.39 mi (7,931.48 km) |
| Clay to Comacchio | 5,012.90 mi (8,067.49 km) |
| Clay to Comiso | 5,404.15 mi (8,697.14 km) |
| Clay to Como | 4,844.02 mi (7,795.69 km) |
| Clay to Concordia Sagittaria | 5,003.41 mi (8,052.21 km) |
| Clay to Concorezzo | 4,861.87 mi (7,824.43 km) |
| Clay to Conegliano | 4,976.26 mi (8,008.52 km) |
| Clay to Conselice | 5,004.46 mi (8,053.90 km) |
| Clay to Conselve | 4,980.95 mi (8,016.06 km) |
| Clay to Conversano | 5,361.96 mi (8,629.24 km) |
| Clay to Copertino | 5,429.69 mi (8,738.24 km) |
| Clay to Copparo | 4,991.11 mi (8,032.42 km) |
