| San Marino to Collegno | 5,995.84 mi (9,649.37 km) |
| San Marino to Cologno al Serio | 6,038.35 mi (9,717.79 km) |
| San Marino to Cologno Monzese | 6,027.81 mi (9,700.82 km) |
| San Marino to Colorno | 6,094.07 mi (9,807.46 km) |
| San Marino to Comacchio | 6,162.91 mi (9,918.25 km) |
| San Marino to Comiso | 6,660.97 mi (10,719.79 km) |
| San Marino to Como | 6,007.05 mi (9,667.42 km) |
| San Marino to Concordia Sagittaria | 6,125.96 mi (9,858.78 km) |
| San Marino to Concorezzo | 6,026.46 mi (9,698.65 km) |
| San Marino to Conegliano | 6,102.80 mi (9,821.50 km) |
| San Marino to Conselice | 6,161.81 mi (9,916.48 km) |
| San Marino to Conselve | 6,124.59 mi (9,856.57 km) |
| San Marino to Conversano | 6,519.55 mi (10,492.21 km) |
| San Marino to Copertino | 6,587.35 mi (10,601.31 km) |
| San Marino to Copparo | 6,141.35 mi (9,883.55 km) |
