Bjorg Lambrecht died in hospital on Monday at the age of 22 after crashing at the Tour of Poland, his team announced.
Egan Bernal, 22, became Colombia's first Tour de France winner and the youngest of any nationality since 1909.
Egan Bernal will become the first Colombian to win the race should he hold on over the 33km climb on Saturday's summit finish in the Alps.
Chris Froome was upgraded from second place and officially declared winner of the 2011 Vuelta a Espana after champion Juan Jose Cobo's doping ban was confirmed.
Chris Froome was crowned the winner of the 2013, 2015, 2016 and 2017 Tours, won the 2017 Vuelta a Espana title and clinched his first Giro d'Italia title in 2018, the first Briton to win the Italian road race.
Chris Froome had been speeding downhill with teammate Wout Poels when a gust of wind blew him off track, making him hit a wall.
Lance Armstrong has largely been shunned by the international cycling world since being exposed as a doping cheat.
Chris Froome came third at the 2018 Tour de France as teammate Geraint Thomas emerged from his shadow to secure his maiden yellow jersey.
Geraint Thomas's Tour de France trophy has been stolen after being displayed at a cycle show, Team Sky said.
Geraint Thomas, the third Briton to win the race after Chris Froome and Bradley Wiggins, secured Team Sky's sixth victory in the race from the past seven editions.
Geraint Thomas' win will give Team Sky their sixth yellow jersey from the last seven editions of the race.
Primoz Roglic, who only took up cycling six years ago, now has two stage wins on the race having won a stage in the Alps last year.
Britain's Geraint Thomas, of Team Sky, finished close behind to tighten his grip on the yellow jersey three days before the 21st and final stage in Paris.
Geraint Thomas held an overnight lead of 1min 39sec on compatriot Froome, but took it to 2:31 after the four-time champion crossed the finish 1:36 behind Quintana and nearly a minute off Thomas.
Chris Froome and Vincenzo Nibali are the only two men in this year's race to have won a Tour de France.
The former cycling superstar was due to face a trial next month over claims he defrauded the US government when he doped while racing for his United States Postal Service-sponsored team
UKAD had launched an inquiry in 2016 after a British newspaper reported a mystery package meant for the now-retired Bradley Wiggins had been delivered to Team Sky during a 2011 race in France.
Close to 50 cyclists will take the thrilling mountainous trail of the hill-state of Uttarakhand, starting from one of the most picturesque sights of Nainital, covering an area 884 kms under The third Ultimate Uttarakhand Himalayan MTB Challenge.