A fan favorite for competition days and daily training sessions, the Topo Athletic MTN Racer 4 delivers robust performance on technical trails. Its platform of 33 x 28 mm provides good cushioning underfoot as well as a protective barrier between you and the ground. The new upper has been optimized to offer powerful support on technical terrain. The MTN Racer 4 now features our FKT insole, which allows for faster water drainage and better energy return, while our improved gaiter attachment system effectively prevents dirt from entering. The Vibram Megagrip outsole ensures excellent traction and high durability, providing reliable performance even when the trails become challenging.