All 18 UCI WorldTeams and six UCI ProTeams made up the 24 teams that participated in the race.[3][4]Cofidis, with six riders, was the only team to not enter a full squad of seven riders.[5]
A wave of flu-like symptoms, although with no positive COVID-19 test results, resulted in an unusually high attrition rate as many riders were forced to withdraw from the race.[6] Of the 167 riders who started the race, 143 finished.[7]
On stage 2, Tadej Pogačar, who was third in the points classification, wore the violet jersey, because first-placed Filippo Ganna wore the blue jersey as the leader of the general classification and second-placed Remco Evenepoel wore the white jersey as the leader of the young rider classification.[13]
On stage 3, Tim Merlier, who was second in the points classification, wore the violet jersey, because first-placed Filippo Ganna wore the blue jersey as the leader of the general classification.[16]
On stage 5, Tim Merlier, who was second in the points classification, wore the violet jersey, because first-placed Tadej Pogačar wore the blue jersey as the leader of the general classification. For the same reason, Remco Evenepoel, who was second in the young rider classification, wore the white jersey.[22]
On stage 6, Remco Evenepoel, who was second in the points classification, wore the violet jersey, because first-placed Tadej Pogačar wore the blue jersey as the leader of the general classification. Pogačar and Evenepoel were also first and second in the young rider classification, so third-placed Thymen Arensman wore the white jersey.[25]
On stage 7, Jonas Vingegaard, who was second in the points classification, wore the violet jersey, because first-placed Tadej Pogačar wore the blue jersey as the leader of the general classification. For the same reason, Thymen Arensman, who was second in the young rider classification, wore the white jersey.[22]