| San Marino to Cortona | 6,233.02 mi (10,031.07 km) |
| San Marino to Cosenza | 6,585.58 mi (10,598.47 km) |
| San Marino to Cossato | 5,990.15 mi (9,640.21 km) |
| San Marino to Costa Volpino | 6,037.98 mi (9,717.20 km) |
| San Marino to Creazzo | 6,096.76 mi (9,811.79 km) |
| San Marino to Crema | 6,049.13 mi (9,735.14 km) |
| San Marino to Cremona | 6,072.46 mi (9,772.69 km) |
| San Marino to Crevalcore | 6,129.73 mi (9,864.86 km) |
| San Marino to Crispiano | 6,543.68 mi (10,531.04 km) |
| San Marino to Crosia | 6,587.04 mi (10,600.82 km) |
| San Marino to Crotone | 6,625.06 mi (10,662.00 km) |
| San Marino to Cuneo | 6,030.56 mi (9,705.25 km) |
| San Marino to Cuorgne | 5,982.42 mi (9,627.78 km) |
| San Marino to Cusano Milanino | 6,023.66 mi (9,694.15 km) |
| San Marino to Cutro | 6,623.66 mi (10,659.75 km) |
