| San Marino to Carmona | 5,861.63 mi (9,433.38 km) |
| San Marino to Cartagena | 6,047.47 mi (9,732.47 km) |
| San Marino to Cartama | 5,937.52 mi (9,555.51 km) |
| San Marino to Cartaya | 5,805.32 mi (9,342.77 km) |
| San Marino to Caspe | 5,914.45 mi (9,518.38 km) |
| San Marino to Cassa de la Selva | 5,991.59 mi (9,642.53 km) |
| San Marino to Castalla | 6,013.35 mi (9,677.56 km) |
| San Marino to Castellbisbal | 5,978.66 mi (9,621.73 km) |
| San Marino to Castelldefels | 5,987.93 mi (9,636.64 km) |
| San Marino to Castello de Ampurias | 5,980.94 mi (9,625.40 km) |
| San Marino to Castellon de la Plana | 5,973.29 mi (9,613.08 km) |
| San Marino to Castilleja de la Cuesta | 5,847.72 mi (9,411.00 km) |
| San Marino to Catarroja | 5,986.10 mi (9,633.69 km) |
| San Marino to Catral | 6,028.46 mi (9,701.86 km) |
| San Marino to Caudete | 5,995.71 mi (9,649.16 km) |
