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I've been having a play this week with a borrowed power meter and it got me wondering about the best way to ride in an IM.
I tried spinning at 100rpm in X gear, then 90rpm in Y gear, then and eventually found that the best effort i could put out was at around 80 rpm in a big gear.
Is it better to push a bigger gear at a lower rpm or smaller gear at higher rpm with the run in mind?