| San Marcos to Cocentaina | 6,027.10 mi (9,699.68 km) |
| San Marcos to Coin | 5,940.29 mi (9,559.98 km) |
| San Marcos to Colindres | 5,699.39 mi (9,172.28 km) |
| San Marcos to Collado-Villalba | 5,798.12 mi (9,331.17 km) |
| San Marcos to Colmenar Viejo | 5,806.83 mi (9,345.19 km) |
| San Marcos to Colmenarejo | 5,800.94 mi (9,335.71 km) |
| San Marcos to Conil de la Frontera | 5,899.81 mi (9,494.83 km) |
| San Marcos to Consuegra | 5,865.94 mi (9,440.32 km) |
| San Marcos to Corbera de Llobregat | 5,996.02 mi (9,649.65 km) |
| San Marcos to Cordoba | 5,886.01 mi (9,472.61 km) |
| San Marcos to Coria del Rio | 5,857.66 mi (9,426.99 km) |
| San Marcos to Crevillente | 6,034.85 mi (9,712.16 km) |
| San Marcos to Cuarte de Huerva | 5,878.77 mi (9,460.96 km) |
| San Marcos to Cubellas | 5,995.91 mi (9,649.49 km) |
| San Marcos to Cuellar | 5,752.30 mi (9,257.42 km) |
