The Endorphin franchise expands with a high-tech training powerhouse. Built for runners who demand both speed and durability, the Endorphin Trainer running shoe brings race-day innovation to everyday training. At its core, a top layer of IncrediRUN superfoam—our lightest, most responsive midsole—pairs with a durable bottom PWRRUN layer to create an ultra-stable, energy-efficient platform. A ¾-length carbon fiber plate, tuned specifically for training, works with Speedroll Technology to propel you forward, ensuring smooth transitions and effortless toe-offs. The result? A shoe that harnesses cutting-edge innovation to make high-mileage weeks and everyday training feel smoother, faster, and more efficient.