Please select a radar-climb :
Calculation date and margin of error are displayed when you let the cursor over a watt value.
The last 200m are different since 1993. That's why this common section ends at the crossroads where the 2 routes differ.
For the data before 1990, we use a power 80kg-standard instead of 78kg, because of the equipment & cyclist evolutions.
The 1982 stage is shorter than the others (only 3h30)
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
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