Colorado Mud Run & Obstacle Race Calendar 2025-2026

The 2025 Altitude Elementary Moose Mudder is a community-focused running event taking place in Aurora, Colorado. It features a 1K fun walk/run and a timed 5K race, along with an optional muddy obstacle course for participants seeking an extra challenge. This event encourages all community members to join, whether to compete, walk with friends, or cheer on participants. The first 300 registrants will receive a T-shirt and moose antlers. The Moose Mudder is set to occur rain or shine, and while efforts will be made to hold the event, no refunds will be issued in case of cancellation due to weather. Visit the organization's website for the most recent information.

The Colorado Springs Spartan Event Weekend, taking place at Fort Carson from May 31 to June 1, 2025, features a series of challenging obstacle course races. Participants can choose from various distances, including the Sprint 5K with 20 obstacles, the Super 10K with 25 obstacles, the Beast 21K with 30 obstacles, and the Ultra 50K 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 strength, making it an inspiring experience for all athletes. Visit the organization's website for the most recent information.

The Colorado DEKA FIT Road Show is an indoor hybrid fitness event held at Blue Sports Stable in Superior, Colorado. Participants face 10 functional fitness zones, each preceded by a 500-meter run, totaling a 5K distance. The event is designed for all fitness levels, offering opportunities to earn the DEKA FIT Mark, medals, and a finisher shirt.

It features various heats, including age group, elite, ruck, and team categories. The event promotes community involvement through an Athlete Judge Program and provides a platform to test endurance, strength, and mental toughness. Participants can also qualify for the 2025 DEKA World Championships. 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 5K 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 can expect a unique overnight experience with amenities such as hot water, snacks, and dedicated spaces for teams. All participants will receive a finisher headband, event bib, and exclusive medals, making it a memorable challenge for all involved. 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 headband, along with a celebratory drink. Spectators can enjoy the Mudder Village Festival, which includes live entertainment and local food. Group packages and volunteer opportunities are also available. Visit the organization's website for the most recent information.