Power Data Estimates for the climbing stages

[Cookster15]

Honestly I think the +6 adjustment is just really dumb because the stage until that point had been super easy. When everyone gets a PB on a day, the correction factor is just wrong lol

Can someone explain what is the correction factor for?

 

[Pozzovivo]

Can someone explain what is the correction factor for?

Qu'est-ce que l'indice de performance ? - Watts2Win

watts2win.eu

 

[Pozzovivo]

Honestly I think the +6 adjustment is just really dumb because the stage until that point had been super easy. When everyone gets a PB on a day, the correction factor is just wrong lol

By far his best ever performance still.

https://lanternerouge.com/2025/05/31/simon-yates-smashes-finestre-record-giro-ditalia-2025-stage-20/

 

[Red Rick]

Can someone explain what is the correction factor for?

It's an attempt to standardize for overall race difficulty, and I think they primarily like to use the kJ/kg metric of the overall stage. I don't know why Finestre gets such a big addition now because they did under 2000m of climbing going into the base, though perhaps the high altitude and gradient also has to do with it. Oh and Finestre, so it must very likely be the gravel. Funnily Sestriere only gets a +7 correction on it.

I can't find where they explain how they standardize it now, but they were pretty open that they do not take into account drafting and wind, which is why they tend to get high numbers on shallower climbs for larger groups, which leads to the entire top 10 doing their seasonal best on the low altitude 6.5% average Montserrat climb in Catalunya for example.

Essentially by correcting for overall fatigue and these other factors they try to rate different climbs in different stages at different fatigue levels. So today would be a 90 rated performance if it was all asphalt I think.

It's a higher rating than any so far this year, and last year Pogacar, Vingegaard and Evenepoel (once) beat that rating

Funnily enough the index is supposed to be from 0-100 but Pogacar broke it last year as Plateau de Beille hit 111 on the index

 

[peterfin]

It's an attempt to standardize for overall race difficulty, and I think they primarily like to use the kJ/kg metric of the overall stage. I don't know why Finestre gets such a big addition now because they did under 2000m of climbing going into the base, though perhaps the high altitude and gradient also has to do with it. Oh and Finestre, so it must very likely be the gravel. Funnily Sestriere only gets a +7 correction on it.

I can't find where they explain how they standardize it now, but they were pretty open that they do not take into account drafting and wind, which is why they tend to get high numbers on shallower climbs for larger groups, which leads to the entire top 10 doing their seasonal best on the low altitude 6.5% average Montserrat climb in Catalunya for example.

Essentially by correcting for overall fatigue and these other factors they try to rate different climbs in different stages at different fatigue levels. So today would be a 90 rated performance if it was all asphalt I think.

It's a higher rating than any so far this year, and last year Pogacar, Vingegaard and Evenepoel (once) beat that rating

Funnily enough the index is supposed to be from 0-100 but Pogacar broke it last year as Plateau de Beille hit 111 on the index

Pogacar just had his third alien performance today according to Watts2win: 102. It was corrected down by 3 points (due to altitude and profile I guess) but they don't account for the fact that he did it all alone without drafting.

 

[Froome]

Pogacar just had his third alien performance today according to Watts2win: 102. It was corrected down by 3 points (due to altitude and profile I guess) but they don't account for the fact that he did it all alone without drafting.

Lanterne rouge are more credible than watts2win, and lanternrouge is very sensationalist because they do weight etalon of 60 kg to increase the w/kg in calculations.


Check Chronowatts from Engineer Frederic Portoleau or Ammattipyoraily.

Pogacar did around 7 w/kg in 20 minutes.

Vingegaard did 6.6/6.7 w/kg similar to what he did on Croix de Fer Dauphiné 2023, but the altitude was high.

 

[Red Rick]

Pogacar just had his third alien performance today according to Watts2win: 102. It was corrected down by 3 points (due to altitude and profile I guess) but they don't account for the fact that he did it all alone without drafting.

If the entire top 5 does seasonal bests, take it with a line of salt.

This calculation seems especially suss today

 

[Netserk]

If the entire top 5 does seasonal bests, take it with a line of salt.

This calculation seems especially suss today

I dunno, I'd expect them to do their seasonal best here. July will be megaretarded, so June is mediumretarded.

 

[Ulle97]

Is it fair to say that Pogacar's climbing performance on Plateau de Beille last year was the greatest climbing performance of all time?

Oris there another climbing display that is better?

 

[Pozzovivo]

Is it fair to say that Pogacar's climbing performance on Plateau de Beille last year was the greatest climbing performance of all time?

Oris there another climbing display that is better?

It's very fair, especially considering the difficulty of the stage before the final climb.

 

[Ulle97]

So after last year's blitz of climbing times, does anyone feel that the Ventoux record will be scorched this year??

Does Mayo hold the record??

 

[Pozzovivo]

So after last year's blitz of climbing times, does anyone feel that the Ventoux record will be scorched this year??

Does Mayo hold the record??

Depends on wind conditions on the day. For sure Pogacar and Vingegaard have the level to break it.

 

[Krzysztof_O]

So after last year's blitz of climbing times, does anyone feel that the Ventoux record will be scorched this year??

Does Mayo hold the record??

Mayo's record is pretty awesome and was achieved during an ITT (he paced himself perfectly). Obviously the mutants are able beat it (if the tempo is strong from the bottom) but it's far from guaranteed.

 

[Mayomaniac]

Mayo's record is pretty awesome and was achieved during an ITT (he paced himself perfectly). Obviously the mutants are able beat it (if the tempo is strong from the bottom) but it's far from guaranteed.

That said, on such an unipuerto stage with a train going full gas from the start of the climb you should be able to go faster than in a MTT. To break the record Pogacar or Vingegaard would have to be able to drop the other one early before the Chalet, so that tactics don't have an impact + you need favourable wind conditiosn on a climb like Ventoux. But if one drops the other one early or the other one insists like Vingegaard on PdB, then the record is beatable. The bigger think is the Hautacam record, the implications of beating that one would ring a few alarm bells among media, mainly more mainstream oriented and not the strictly cycling related that benefits from the sport and doesn't want to talk about such things.

That said, on such a long climb the advancements in regard to rolling resistance (better tires in general, tubeless having less rolling resistance and wider tires reducing it even further) would be a big deal, I recon Iban Mayo would have gone a good minute faster with those kind of tires on his old bike (if the weight was equal).

 

[snipeheem]

That said, on such an unipuerto stage with a train going full gas from the start of the climb you should be able to go faster than in a MTT. To break the record Pogacar or Vingegaard would have to be able to drop the other one early before the Chalet, so that tactics don't have an impact + you need favourable wind conditiosn on a climb like Ventoux. But if one drops the other one early or the other one insists like Vingegaard on PdB, then the record is beatable. The bigger think is the Hautacam record, the implications of beating that one would ring a few alarm bells among media, mainly more mainstream oriented and not the strictly cycling related that benefits from the sport and doesn't want to talk about such things.

That said, on such a long climb the advancements in regard to rolling resistance (better tires in general, tubeless having less rolling resistance and wider tires reducing it even further) would be a big deal, I recon Iban Mayo would have gone a good minute faster with those kind of tires on his old bike (if the weight was equal).

Hautacam record will go down this year. I have zero doubts about it.