Big Bear Lake’s first Tough Mudder this September 2025 is a delicious event serving up challenging terrain, mud, demanding obstacles, mud, epic views, and mud, teamwork, camaraderie, more mud, and finally…

This exclusive co-branded In-N-Out Burger® Tough Mudder Challenge offers a 5K and 10K course. Crossing the finish line not only tastes so good but makes the world a better place. Proceeds directly benefit the Slave 2 Nothing Foundation that is dedicated to ending substance abuse and human trafficking. The 5K and 10K course races are offered Friday, Saturday, and Sunday. Also, enjoy the oh-so-delicious Mudder Village Festival with Double-Doubles® served hot and fresh by In-N-Out® Cookout Trucks.