What Our Gearhead(R) Experts Are Saying: "I've taken the Xodus Ultra 4 on technical trail runs and long-distance hikes, and it never misses. The PWRRUN PB foam is super lively for how protective it feels, and the improved outsole grips in both dry dust and slick rock. Great mix of cushioning, stability, and traction." When our trail plans stretch into the double digits-or even the ultramarathon realm-we reach for the Saucony Xodus Ultra 4 Trail Running Shoe. Designed for serious distance and rugged terrain, this workhorse balances high cushioning with reliable protection. A combination of responsive PWRRUN PB foam and a PWRRUN frame provides a plush yet supportive ride, and a broader platform adds stability on uneven ground. On the upper, a breathable closed mesh defends against debris without sacrificing comfort, while the PWRTRAC outsole features improved traction and 4mm lugs that adapt to everything from loamy forest floors to rocky ascents. With a roomy midfoot fit, high stack height, and responsive cushion, this shoe is built to go the distance-whether that's a morning trail loop or a 50K.