Just did my first event in TT mode… used it for a 20-minute power test I needed to do anyway. Bologna course is nearly perfect for this, which is great! But here’s the weird thing–the critical power curve was WAY off. According to Strava and TrainingPeaks’ power curves my 20-minute CP was 313 watts…

And here’s my time and average power when I crossed the finish line… [2019-06-22_08250223]

I would have to guess that TP, Strava, and Zwift use different algorithms. Looking at the ‘photo’ I can see that your avg was 311 watts (nice job), but I also see that your time was 19:08. And I’m guessing that shortly after the finish line your power dropped to next to nothing (or at least signific…

Not a bad theory Jeffrey. But I kept going to the 20 minute mark since I was doing a 20 minute power test. So I definitely DID average 313w for the 20 minutes. I have no idea where Zwift for their number.

Curiouser and curiouser. Does ZwiftPower provide any additional insight?

ZwiftPower only catches the event data and not the cool down.

Had a thought while Zwifting this morning… checked Strava afterward and I was right! So, when I did this ride, I actually rode FIRST in Watopia. Just a free ride. I had signed up for a TT event in Bologna, so when that rolled around I clicked and joined that event, and did my 20-minute test there. …

On the topic of wacky looking critical power curves, attached in mine from a TT this morning. Two other sites agree that it should be downward sloping, 1s (414), 5s (391), 15s (359), 30s (352), 1m (341) 5m (288), 10m (277) and 20m (272)! After the TT was over I rode for 2 or 3 more kms at a gentle…

And this is the other screenshot from the ride report. [12%20PM]

Critical power curve incorrect after TT mode race

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Critical power curve incorrect after TT mode race

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