The Altra Men's Lone Peak 9 delivers technical performance for serious trail athletes. This iteration features a reinforced upper constructed from 100% recycled ripstop mesh with no-sew overlays, engineered for extended high-mileage use. The revised midsole foam reduces weight while maintaining responsive ground contact and proprioceptive feedback. An enhanced outsole compound provides superior traction across variable terrain. The signature zero-drop platform and expansive toe box accommodate natural foot splay and midfoot volume, supporting efficient biomechanics on technical descents and sustained climbs. Purpose-built for demanding mountain environments. Best For: Trail running, hiking, thru hiking Heel-to-Toe Drop: 0mm Upper: 100% RPET ripstop mesh upper Midsole: Altra EGO™ Outsole: MaxTrac™ Weight: W: 9.3 oz / 263.65 g | M: 11.15 oz / 316 g Cushion: Mid Stack Height: 25mm/25mm Support: Neutral FootShape: Original