Three Tour de France cyclists have died while competing.
Fabio Casartelli - 1995
?On July 18th, 1995, during stage 15 of the Tour de France, Fabio
Casartelli crashed on the descent of Col de Portet d'Aspet and was
Tommy Simpson - 1967
?During the 1967 Tour de France, English rider Tom Simpson collapsed
with heat exhaustion and died on the ascent of Mount Ventoux while
challenging for the yellow jersey. He officially died of heart failure
but Tour officials found amphetamines in his jersey and an autopsy
revealed traces in his body.?
Francesco Cepeda - 1935
?A Spanish rider who died after plunging down a ravine on the Col du
Galabier in the French Alps during the 1935 Tour de France.?
The KOM Fabio Casartelli Memorial Page
?1935: Spanish racer Francisco Cepeda died after plunging down a
ravine on the Col du Galibier.?
?1967: July 13, Stage 13: English rider Tom Simpson died of heart
failure on the ascent of Mont Ventoux. Amphetamines and alcohol were
found on Simpson's jersey and in his bloodstream. His death prompted
tour officials to begin a programme of drug testing.?
?1995: July 18, stage 15: Italian racer Fabio Casartelli crashed at
approximately 88 km/h descending the Col de Portet d'Aspet.
Casartelli, not wearing a helmet, received massive trauma to the top
of his head from a concrete block and died on the scene.?
?On July 18 during the fifteenth stage of the 1995 Tour de France,
Fabio Casartelli and a few other riders crashed on the descent of the
Col de Portet d'Aspet in the Pyrenees. Casartelli sustained heavy
facial and head injuries and lost consciousness. While being
transported via helicopter to a local hospital, he stopped breathing
and after numerous resuscitation attempts was declared dead. Many have
claimed if Casartelli had been wearing a modern bicycle helmet his
life may have been saved, but the impact was not exclusively to the
part of the head protected by a helmet, and an impact at nearly 100
km/h (60 mph) has more than twenty times the energy a typical helmet
is designed to absorb.?
Tour de France fatalities
I hope the information provided is helpful!