Colorado 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.

The 2025 Altitude Elementary Moose Mudder is a running event scheduled for May 4, 2025, in Aurora, Colorado. This exciting event features two race options: a 1K and a 5K, catering to participants of various ages and skill levels. The Moose Mudder aims to promote fitness and community engagement while providing a fun and challenging experience for all runners. Registration is currently open, allowing participants to secure their spots for this anticipated event. For more details, including course information and sponsorship opportunities, interested individuals can visit the event's official website. Visit the organization's website for the most recent information.

The Colorado Springs Spartan Event Weekend, taking place at Fort Carson, features a series of challenging obstacle course races from May 31 to June 1, 2025. Participants can choose from various race distances, including a 5K Sprint with 20 obstacles, a 10K Super with 25 obstacles, a 21K Beast with 30 obstacles, and a 50K Ultra with 60 obstacles. There is also a Kids Race for younger participants. Set against the backdrop of rugged terrain and steep climbs, this event promises to test both physical endurance and mental resilience, making it an exciting experience for athletes of all levels. Visit the organization's website for the most recent information.

The 2025 Colorado DEKA FIT Roadshow, taking place in Superior, Colorado, is an indoor fitness competition designed for participants of all fitness levels. The event features 10 functional fitness zones, each preceded by a 500-meter run, culminating in a total distance of 5 kilometers. Participants can earn their DEKA Mark and compete for recognition in various heat types, including Age Group, Elite, Ruck, and Team heats. This Roadshow offers a unique opportunity to qualify for the 2025 DEKA World Championships and includes a chance to earn a finisher medal and t-shirt. Visit the organization's website for the most recent information.

Tough Mudder Colorado is an exhilarating obstacle course event taking place at Fort Carson, Colorado, on September 27 and 28, 2025. Participants can choose from various challenges, including a 15K and a 5K course, featuring over 20 unique obstacles designed to test endurance and teamwork. The event promises stunning views of the Rockies and a muddy, thrilling experience. Finishers receive a medal, a finisher shirt, and an iconic orange headband, along with a complimentary drink to celebrate their achievement. Spectators can enjoy the Mudder Village Festival, which includes live entertainment and local food. Visit the organization's website for the most recent information.

Toughest Mudder Colorado is an exhilarating endurance event scheduled for September 27, 2025, at Fort Carson, Colorado. Participants will face a challenging 5-mile course filled with a variety of intense obstacles over a 12-hour period, starting at night. The event offers both individual and team relay formats, catering to different skill levels and age groups. Competitors will receive a finisher headband, event bib, and exclusive medals, symbolizing their achievement. With amenities like an overnight pit area and refreshments, Toughest Mudder promises a unique and thrilling experience for all participants. Visit the organization's website for the most recent information.