Age old vaporfly vs alphafly question. Half marathon this Sunday on roads. Weather in high 20s w some wind, relatively flat with 2 hilly sections. ( Vaporfly have 68 miles, alphafly have 38
Episode 9: World Marathon Records are Falling, Ineos 1:59, Breaking 2, Nike Vaporfly 4%, Mechanical Doping, and more - The Art and Science of Running Podcast
The Science Behind Nike's New ZoomX Vaporfly Next% Marathon Shoe | WIRED