Made for Speed day / race day The Endorphin Speed 5 is built to go fast and feel smooth—whether you're pushing the pace on track night with friends or you're chasing a PR. A newly designed nylon plate and responsive PWRRUN PB cushioning come together for snappy transitions and a fast ride. This is speed you can count on. Origin: The Endorphin Speed 5, a descendant of the 'original super trainer,' emerges in June 2025, solidifying its place in the lineage of performance footwear. It represents a fusion of race-day technology and daily training durability, a hallmark of the Endorphin Speed series. This iteration builds upon the series' legacy, promising enhanced features and a refined experience for runners seeking speed and versatility. Construction: This iteration features a redesigned engineered hexagon mesh upper, meticulously crafted for breathability and a secure fit. The midsole integrates PWRRUN PB foam, a PEBA-based compound, delivering responsive cushioning and energy return. The inclusion of a Winged Nylon Plate and SPEEDROLL technology further enhances the shoe's performance, promoting a forward-motion feel. The outsole utilizes XT-900 carbon rubber, strategically placed for durability and traction. Utility: The Endorphin Speed 5 is engineered as a versatile speed training shoe, adept at handling tempo runs, speed workouts, and long runs with equal prowess. Its design caters to the demands of both daily training and race-day efforts, providing the necessary support and responsiveness. With its carefully considered stack heights and drop, the shoe offers a balanced feel, encouraging an efficient and comfortable stride across various running scenarios. Influence: The Endorphin Speed series, from which this model derives, has significantly impacted the running community. The series has become synonymous with innovation in running shoe technology. This model's heritage is deeply intertwined with the pursuit of speed. The Endorphin Speed series is a cornerstone for runners of all levels, solidifying its place in running culture.