"What Our Gearhead® Experts Are Saying: ""I've put in serious miles with the Endorphin Speed 5, and it’s easily my favorite for tempo days and long runs. That PWRRUN PB foam stays incredibly light and springy, and the nylon plate gives just enough propulsion without feeling overly stiff. It’s fast but forgiving."" When we’re chasing PRs or just chasing the sun down the trail, the Saucony Endorphin Speed 5 Running Shoe keeps us light on our feet and charging ahead. Built on a platform of responsive PWRRUN PB foam, this shoe brings max energy return and a bouncy underfoot feel that keeps every stride efficient and alive. Saucony carries over the trusted nylon plate from the Speed 4, adding a bit more flexibility to boost both comfort and stability without sacrificing propulsion. The 38mm stack height and 8mm drop remain unchanged, delivering a familiar ride that feels balanced and fast. Whether we’re logging base miles or picking up the pace, this shoe brings the speed."