Junior career Van den Broek-Blaak was the Dutch national junior time trial champion in 2006 and 2007. She was
European under-23 road race champion in 2009 and was also third in the
Ronde van Drenthe race of the
UCI Women's Road World Cup in that year.
Professional career at the start of the
2018 Tour of Flanders Van den Broek-Blaak began her professional career in 2008 with the Dutch and remained with them until they disbanded at the end of 2012, after which she raced for the US team for a year. In 2014, she joined and won her first
UCI Women's Road World Cup race, the
Open de Suède Vårgårda. She transferred to the team for
2015, along with sponsors
Specialized Bicycle Components and
lululemon Athletica and teammate
Evelyn Stevens. She won the
2015 Le Samyn des Dames. 2016 was her most successful season to date, yielding wins in
Le Samyn des Dames, the
Ronde van Drenthe,
Gent–Wevelgem and the
Holland Ladies Tour. In 2017, van den Broek-Blaak became both
Dutch national and
world road race champion after she successfully broke away from an elite group of riders from the finish. 2019 saw Chantal Blaak win
Omloop Het Nieuwsblad for the first time. In 2020, she enhanced her resume by winning the
Tour of Flanders for Women. A year later, she won
Strade Bianche Women. She sat out of the 2023 season after announcing her pregnancy in January at her team's presentation. She returned to racing in 2024, becoming
Dutch national champion for the third time. In January 2025, she announced her retirement as she is expecting a second child – having originally planned to retire at the end of the 2025 season. ==Personal life==