In-N-Out Tough Mudder Challenge

The In-N-Out Burger Tough Mudder Challenge is a dynamic obstacle course event held at Bear Mountain Resort in Big Bear Lake, California. Scheduled for September 5–7, 2025, it features two main race distances: a 10K with over 20 obstacles and a 5K with more than 12 obstacles, designed to test endurance, grit, and teamwork. The event supports the Slave 2 Nothing Foundation, which combats substance abuse and human trafficking.

Participants enjoy a festive atmosphere with a Mudder Village Festival and receive finisher rewards including a meal from In-N-Out’s Cookout Trucks, a medal, shirt, and headband. Spectator passes and VIP options are also available. Visit the organization's website for the most recent information.