I haven't done much Zwifting which wasn't race or workout, but yesterday I just cruised the "London loop". On the first lap I noticed a line on the pavement and a "Box Hill" timer begining, so decided to push hard on the next lap.
Afterwards I couldn't find the segment in Strava, but finally found it through the list
at zwiftblog (
https://zwiftblog.com/verified-zwift-strava-segments/).
Thought I did a well to hold 320 watt, but looking at the Strava segment quickly brought me downt to earth again

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I must say that is some cracking efforts by you all

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