Please select a radar-climb :
Calculation date and margin of error are displayed when you let the cursor over a watt value.
2019: As the riders began the descent of the Col de l'Iseran, the stage was neutralised due to snow, hailstorms, and mudslides rendering the road unsafe near Val-d'Isère on the ascent to Tignes, with times for the general classification being taken at the summit of the Col de l'Iseran
Only this stage :
Where do these data come from ?
Frédéric Portoleau, our "Watts expert" is doing all the power calculations. He started his times and watts measurements in 1988. The details of his work are available here.
Several chronos on the website have been measured by Vetooo, a finnish cycling fan. You can follow his activity on twitter here.
The threshold definition is done by Antoine Vayer.
"Not Normal ?", the magazine, has been created by Antoine Vayer, Stéphane Huby and Frédéric Portoleau.
Finally, the website is the work of ChronosWatts.com team