The evidence library

Studies built from real journeys.

Every study below is drawn from millions of observed activities and race results — everyday runners, not elite athletes. Patterns we found, written plainly, with the method in full view.

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Consistent Improvers Cohort 04 · of 6
3,241 runners like you. Studies below can now show where you fit — observed, never predicted.
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See which studies are about you.

Connect your history and we'll surface the evidence drawn from runners whose journey looks like yours.