| San Marcos to Collegno | 6,020.32 mi (9,688.77 km) |
| San Marcos to Cologno al Serio | 6,064.93 mi (9,760.57 km) |
| San Marcos to Cologno Monzese | 6,054.02 mi (9,743.00 km) |
| San Marcos to Colorno | 6,120.56 mi (9,850.09 km) |
| San Marcos to Comacchio | 6,190.58 mi (9,962.78 km) |
| San Marcos to Comiso | 6,683.61 mi (10,756.23 km) |
| San Marcos to Como | 6,033.39 mi (9,709.81 km) |
| San Marcos to Concordia Sagittaria | 6,155.13 mi (9,905.72 km) |
| San Marcos to Concorezzo | 6,052.78 mi (9,741.00 km) |
| San Marcos to Conegliano | 6,131.65 mi (9,867.93 km) |
| San Marcos to Conselice | 6,189.04 mi (9,960.30 km) |
| San Marcos to Conselve | 6,152.51 mi (9,901.50 km) |
| San Marcos to Conversano | 6,548.02 mi (10,538.01 km) |
| San Marcos to Copertino | 6,616.04 mi (10,647.49 km) |
| San Marcos to Copparo | 6,168.93 mi (9,927.94 km) |
