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 Colorado Springs Spartan Event Weekend, held at Fort Carson Army Base, offers a challenging obstacle course race experience set in high-elevation, rugged terrain. Participants can choose from multiple distances including the Sprint (5K with 20 obstacles), Super (10K with 25 obstacles), Beast (21K with 30 obstacles), and the Ultra (50K with 60 obstacles). The course features steep climbs and muscle-testing obstacles designed to push both body and mind.

The event also includes a kids race and a Trifecta pass for those wanting to complete three distances. The atmosphere is intense and inspiring, set against the backdrop of a prestigious U.S. military site, making it a unique endurance challenge. Visit the organization's website for the most recent information.

The Colorado DEKA FIT Roadshow is an indoor hybrid fitness competition held at the Blue Sports Stable Fieldhouse in Superior, Colorado. Participants tackle 10 functional fitness zones, each preceded by a 500-meter run, totaling a 5K distance. Designed for all fitness levels, the event tests endurance, strength, and mental toughness in a gamified format.

Competitors can earn their DEKA Mark, finisher medal, and shirt, with age group podiums available. The event features multiple heat types, including age group, elite, ruck, and team categories. DEKA FIT also offers a unique Athlete Judge Program to ensure fair competition.

This roadshow serves as a qualifier for the 2025 DEKA World Championships. Visit the organization's website for the most recent information.

Toughest Mudder Colorado, held at Fort Carson, is a unique overnight endurance event scheduled for September 27, 2025. Participants face a challenging 5K course filled with intense obstacles such as Everest, Kiss of Mud, and Cage Crawl, designed to test strength, agility, and grit. The event runs for 12 hours through the night, offering both individual and team relay formats with age group categories and awards. The atmosphere is supportive and adventurous, featuring an overnight pit area with amenities like hot water heaters and snacks. Finishers earn exclusive headbands, bibs, medals, and mileage patches, marking their achievement in this extreme mud run. Visit the organization's website for the most recent information.

Tough Mudder Colorado 2025 takes place at Fort Carson, Colorado, offering a challenging obstacle course set against stunning Rocky Mountain views. Participants can choose between a 15K course featuring over 20 obstacles or a shorter 5K with 12+ obstacles, both designed to test endurance and teamwork through muddy, thigh-burning trails. Signature obstacles include "Kiss of Mud," "Electroshock Therapy," and "Pitfall," providing a mix of physical and mental challenges. Finishers receive a medal, shirt, headband, and a celebratory drink. The event fosters camaraderie with options for VIP experiences, group packages, and a lively Mudder Village for spectators. Visit the organization's website for the most recent information.