Data Shows Nike’s Vaporfly 4% Marathon Shoe Increases Running Economy

Eliud Kipchoge, the world’s best marathon runner, runs in Nike shoes. But do his shoes help him run faster? You’ll be shocked—shocked!—to learn that Nike claims they do. Kipchoge wears a special version of the Vaporfly 4%, which got its name from a study out of UC Boulder. Funded by Nike, and conducted in collaboration …

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