I’m with you on that, my power isn’t as good as yours, I can only sustain around 240W but that only gives me a 35kph speed average. I’m a bit taller than most of the riders here at 188cm (6’2) and 81kg but I wouldn’t think that would make such a difference. Maybe my ‘aero’ position isn’t that aero so will check that out, but like you said I’ve done all the other things to maximise speed. The only other post here that seemed to match what power I will need is RobertK’s but if I need that much I have a lot of work to do
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