FreeSpeed Lab Substack | Jorge Martinez | Substack

Having tested many female triathletes in late 2021 and early 2022, I looked for trends among those who targeted qualifying for the Ironman World Championship in the same year. First, the info provided below is by no means definitive data claiming that to compete at the front of…

Mar 7

Run economy comparison among different types of training/racing super shoes.

Feb 16

This is FreeSpeed Lab Substack.

Feb 7

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