He became a professional in 2011 at the age of just 19 riding for the Danish continental team , where he won two editions of the
U23 Liège–Bastogne–Liège and several other noticeable wins. He worked in the same fish factory as
Jonas Vingegaard while pursuing a career as a pro cyclist. He has ridden the Tour de France 6 times (2015 to 2020) as well as the 2014 Vuelta a Espana. 2018 served as a breakout year seeing him win the classics
Omloop Het Nieuwsblad and the
Amstel Gold Race. In November 2020, Valgren signed a two-year contract with the team. He was added to the start list of the Tour de France for the 7th time in his career
in 2021. In September, he won the
Coppa Sabatini and the
Giro della Toscana one-day races as well as the bronze medal in the
UCI World road race championships. At the
Route d'Occitanie in June 2022, Valgren was badly injured in a crash, sustaining a fractured pelvis, dislocated hip, injuries to the ACL and MCL and a damaged
meniscus. He was unable to race for the rest of the year, and moved down to the the following year as he transitioned back to racing. He returned to competition on April 30, 2023, and soon after announced he would rejoin the World Tour squad the following year. ==Major results==