Montana Mud Run & Obstacle Race Calendar 2025-2026

If you're an adrenaline junkie, fitness enthusiast, or simply seeking a thrilling outdoor adventure, you've arrived at the perfect destination. Our meticulously curated calendar is your gateway to the most exhilarating and challenging mud runs and obstacle races taking place in 2025 and 2026.

Prepare to conquer mud-slicked trails, scale towering walls, navigate through grueling obstacles, and push your physical and mental boundaries. Our mission is to provide you with all the essential information you need to plan your race year, including dates, locations, race details, and registration information.

Zootown Challenge Obstacle Course Race

Missoula • 4 Oct 2025

The ZooTown Challenge Obstacle Course Race, held at Washington-Grizzly Stadium in Missoula, Montana, offers a variety of races catering to all skill levels, from novices to experts. Events include the Griz Double 10k with 35 obstacles, the Expert and Novice 5k courses featuring 20 obstacles, a new ZooTown STRONG race, a 3k No M Trail run, a kids' race, and an All Abilities race for athletes with physical or intellectual disabilities. The course spans the stadium, University of Montana campus, and surrounding areas, creating an exciting atmosphere with crowd support and food trucks for spectators. Proceeds benefit Opportunity Resources Inc., supporting people with disabilities. Visit the organization's website for the most recent information.