Groenewegen was born to a working-class family in Amsterdam. His grandfather, Ko Zieleman, assembled custom bike frames of which Groenewegen received his first bike at the age of seven. Zieleman owned a shop selling bike frames, a trade that his father had started in 1928, which Groenewegen's father, Gerrie, has continued. At the age of 17, Groenewegen went to a trade school in order to follow his previous three generations as a frame-builder.
Career
Pre-2015
Groenewegen said in an interview that he had to choose between or to join in 2014. He chose the former as they gave him "a lot of confidence".
2015
In October 2015, Groenewegen announced that he had signed with on an initial three-year deal from 2016.
In the Dubai Tour, which ran from late January into early February, Groenewegen came second in the general classification, having finished second in stages 1 and 2. Despite narrowly missing out on victory in these areas, he did win the overall youth classification. On 28 April, Groenewegen won the first stage of the Tour de Yorkshire. The stage, which was long from Bridlington to Scarbrough, came down to a photo finish where he held off Australian sprinter Caleb Ewan. He came fourth on the second stage which finished in Harrogate. He continued this success when in May, he won two stages at the Tour of Norway. The Tour de France started well for Groenewegen when he came fifth on stage 2, the first flat stage. He produced two more top-10 results in the first week, with sixth in stages 6 and 7. After two mountain stages and a rest day in Dordogne, he returned to finish third on stage 10 - a route from Perigueux to Bergerac. Groenewegen won the final stage of the Tour de France on the last stage on the Champs-Élysées in Paris.
2018
In February, Groenewegen competed in the Dubai Tour and won stage 1. Groenewegen held the general classification lead until the third stage when he was penalised 20 seconds after illegally drafting behind his team's car after suffering a mechanical fault. The blue jersey, given to the race leader, was lost to Elia Viviani who started the day two seconds behind Groenewegen, who dropped out of the top 10. He expressed his anger, saying "I had problems with my bike, the mechanicals fucked it up for me. I actually think it was a good decision by the judges but it fucked it up for me" before placing the blame on his mechanics, saying that "it’s the fault of my mechanics". In the Tour de France, Groenewegen won stage 7 after beating Fernando Gaviria and Peter Sagan, both of whom had won two stages thus far in the tour. The stage was the longest in the tour at which started in Fougères and finished in Chartres, Northern France. Groenewegen also won stage 8, beating Sagan and John Degenkolb in Amiens. In an interview, Groenewegen said that the sprint was "a bit messy" but he said that he "surged ahead" and took advantage of the "good opportunity".
2019
Groenwegen won stage 7 of the Tour de France, the longest stage in the tour at finishing in Chalon-sur-Saone. He beat Caleb Ewan and Sagan, giving him his fourth Tour de France stage win. Groenewegen won stage 1, 3 and 5 of the Tour of Britain, beating Davide Cimolai, Mathieu van der Poel, and Matthew Walls on the respective stages.
Personal life
As of 2017, Groenewegen lives in Rivierenbuurt, a district in Amsterdam.
