| San Marino to Cocentaina | 6,015.53 mi (9,681.06 km) |
| San Marino to Coin | 5,934.48 mi (9,550.62 km) |
| San Marino to Colindres | 5,684.78 mi (9,148.77 km) |
| San Marino to Collado-Villalba | 5,787.12 mi (9,313.47 km) |
| San Marino to Colmenar Viejo | 5,795.62 mi (9,327.15 km) |
| San Marino to Colmenarejo | 5,790.03 mi (9,318.15 km) |
| San Marino to Conil de la Frontera | 5,895.50 mi (9,487.89 km) |
| San Marino to Consuegra | 5,856.00 mi (9,424.32 km) |
| San Marino to Corbera de Llobregat | 5,979.65 mi (9,623.32 km) |
| San Marino to Cordoba | 5,878.79 mi (9,461.00 km) |
| San Marino to Coria del Rio | 5,852.12 mi (9,418.08 km) |
| San Marino to Crevillente | 6,024.13 mi (9,694.90 km) |
| San Marino to Cuarte de Huerva | 5,864.39 mi (9,437.82 km) |
| San Marino to Cubellas | 5,979.97 mi (9,623.84 km) |
| San Marino to Cuellar | 5,740.63 mi (9,238.64 km) |
