I’ve watched the World Tour for a number of years and marvelled at how fast they go uphill.
One question I’ve asked myself is; could I stay on the wheel and if so - for how long (or short).
Was lucky enough to get the chance to try IRL a few weeks ago whilst on a short cycling trip to Girona.
Suffice to say that the higher end of Zone-2 for a WTP climbing specialist equated to VO2Max for me! 
Predictably it ended rather quickly …
Evidence of my abject failure captured on film (link below). 
Good effort 
Great experience and awesome video!
Thanks - it was sobering and also pretty awesome to see a rider basically noodling at the upper end of their endurance power whilst I was pushing well over threshold into VO2 just to hold the wheel.
Kind of amazing to realise how fit a person can actually become! 
Fitness shmitness. Obviously, you just need to buy a new bike. The 137 gram difference between your antique 2023 model and a new 2025 model, combined with the massive reduction in CdA will more than make up the difference.
Signed,
the bike companies
Haha! if only it were that easy eh!
Ha!
Its also scary to think, he’s just a good pro and not an elite like Tadej or Van der Poel 🫨
I haven’t wondered that because I know the answer! 
Thanks for sharing the video!!
Never even considered whether I could keep up with a pro. Self-evident. 