Iowa 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.

Gladiator Assault Challenge

Boone • 17-18 May 2025

5k Charge (3+ Miles) Full Gladiator Assault Challenge (5-7 Miles)

The Gladiator Assault Challenge is a premier endurance event held in Boone, Iowa, featuring a series of physically demanding obstacle courses designed to test participants' speed, agility, strength, and mental stamina. The event includes various race options, such as the Full Gladiator Assault Challenge (5-7 miles with over 30 obstacles), an Elite Full Gladiator Challenge, a 5K Charge, and a Junior/Parent 5K. Participants receive a finisher t-shirt, medal, and refreshments. The challenge is suitable for individuals and teams, making it a fun and competitive experience for all ages. Visit the organization's website for the most recent information.