Blanco started her career in radio in 1980 as a contributor of
Cadena SER, later in 1989 she debuted in television as host, along with
Agustín Bravo, of the cultural-oriented program
Zip-zap in
Telemadrid. On 15 September 1990, she debuted on
Televisión Española (TVE) as anchor of the weekend edition of
Telediario along with
Francine Gálvez. The following season (1991–92) she anchored the afternoon edition of
Noticias de La 2. Since 28 September 1992, she anchored the different editions of
Telediario –afternoon, evening, and weekend– in different seasons, making her the longest running presenters in the history of the newscast, celebrating her thirty years in 2020. On 11 September 2001, she opened
Telediario 1 with the breaking live feed of the
World Trade Center's North Tower in New York since
it had been hit a few minutes before. She hosted that newscast, narrating the events live, for more than seven hours straight, making it the longest
Telediario news bulletin in its history. During all these years, she has also hosted numerous special informative programs, including special programs on the occasion of different elections, of major breaking news, of historic events, and of anniversaries of historic events. On 15 July 2022, after thirty-two years and more than 7,400 newscast presented on TVE she hosted a
Telediario for the last time. On 29 August 2022,
RTVE announced that she had stepped down the daily newscast. Although just a few days later she covered from London the events after the
death of Queen Elizabeth II, this being her last work onscreen for the newscast. From 9 September 2023 until 24 February 2024, she hosted the weekly
Informe Semanal. She decided to take early retirement, which will take effect on 29 March. ==Awards==