Tour de France Power Data: Juan Antonio Flecha's stage 11 TT effort

Juan Antonio Flecha averaged 391 watts during the 33km time trial

by David Arthur   July 11, 2013  

Juan Antonio Flecha TT

Earlier this week we featured Laurens ten Dam’s ride data from stage eight of the Tour de France, which he uploaded to Strava. Following yesterday's stage 11 individual time trial, Juan Antonio Flecha, who rides for Vacansoleil-DCM, has released his SRM data through TrainingPeaks.

The time trial was relatively short at 33km and was won by Tony Martin in a time of 36 minutes 29 seconds, an average speed of 54.27kph. It was one of the fastest time trials in Tour de France history.

Flecha finished well outside the top GC contenders in 46th position, with a time just over 3 minutes slower. From the power data, we can see that he averaged 391 watts for the duration, with a max output of 921 watts. His average heart rate was 155 and he only went as high as 163.

It’s a decent performance, and clearly a very measured and well paced ride, especially considering the tiredness in the legs from ten reasonably tough days of racing and a weekend in the Pyrenees just gone. What this availability of data does is give you a clear idea of just how fast the pros are racing and the sort of power they’re able to produce. Here’s a link to his ride on TrainingPeaks. The data also includes his warmup as well. We must assume his max speed of 117.8 km/h is a blip....

If you want more, Matteo Tosatta’s (Saxo Bank-Tinkoff) ride is available on the SRM website here.

And if you want to continue following Laurens ten Dam on Strava, here’s his time trial performance, pictured above. Like Flecha, he's included his warmup, rather then resetting his Garmin Forerunner on the start ramp, which skews the data just a little bit. Still, you can clearly make out the portion of the ride in this segment (though the ends has been chopped off), in which he bagged the KOM. Doubt that'll be beaten in a hurry.

There is much talk about transparency in the modern age of cycling, and its necessity to instill confidence in the followers of the sport that today's athletes are racing clean. With nearly all riders using some form of power measurement, is the public availability of their power data a logical step forward in delivering transparency of performance?

6 user comments

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Grammar nazi

"It was nearly one of the fastest time trials in Tour de France history"

Devil

posted by karlowen [65 posts]
11th July 2013 - 11:10

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yeah, just spotted that Wink

Dave Atkinson's picture

posted by Dave Atkinson [7233 posts]
11th July 2013 - 11:24

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Brailsford should publish FroomeDog's data and let the 'psuedo-scientists' as he calls them assess it.

Good to see other TdF riders happy to publish their data. Laurens Ten Dam is very good at this and very transparent about it. And he is a Top 10 rider on GC.

posted by seanbolton [118 posts]
11th July 2013 - 12:45

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seanbolton wrote:
Brailsford should publish FroomeDog's data and let the 'psuedo-scientists' as he calls them assess it.

Good to see other TdF riders happy to publish their data. Laurens Ten Dam is very good at this and very transparent about it. And he is a Top 10 rider on GC.

I don't understand why Sky won't do this. We don't need their training secrets, but SRM files for key stages would go a long way to quieting the suspicion (and utter bullshit, yes, you Clinic) which gets thrown their way. As for Brailsford dismissing 'pseudo-scientists' - tough buns DB, because if you don't rate them, there are plenty of noisy people on Twitter and forums who do (including the likes of Jonathan Vaughters). If these guys are producing duff calculations based on incomplete data - then sodding well give them accurate data and correct them if they get the figures wrong. Patronising them and refusing to engage is staggeringly stupid.

Rob Simmonds's picture

posted by Rob Simmonds [251 posts]
11th July 2013 - 13:43

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"We must assume his max speed of 117.8 km/h is a blip...."

Far more likely is that he was riding in the team bus - that section coincides with a HR in the 70s and 0 watts output so is surely the journey from the finish to the hotel.

While releasing Froome's power data may well be a step in the right direction, providing the 'transparency' that Brailsford and Sky promised they'd bring, I'm not sure it will change anyone's mind about whether he's doping.

Simon E's picture

posted by Simon E [1886 posts]
12th July 2013 - 10:09

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Veloclinic and Ross Tucker of Science of Sport are both qualified scientists, specialising in sports medicine. Not exactly psuedo...

posted by Paul J [525 posts]
13th July 2013 - 12:18

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