The Barr Lake Trail Race invites runners to experience one of the fastest and flattest courses in Colorado, with less than 100 feet of elevation gain per loop. Located in scenic Brighton, CO, this course treats you to uninterrupted views of Barr Lake and the stunning front range, making it an ideal setting for both seasoned runners chasing new PRs and newcomers seeking a welcoming race experience.
Starting and finishing at the Nature Center, this event features a looped course that wraps around the lake, showcasing Colorado’s natural beauty every step of the way. Whether you’re here to soak in the scenery or push your pace, Barr Lake offers an unforgettable trail experience with an inviting atmosphere.
Race entries are non-refundable and non-transferable. For other options, please check out our Race Withdrawal Policy.
Course Descriptions
50 KM Course
The 50K course at Barr Lake offers a unique ultra-distance experience on one of Colorado’s flattest and fastest trails, featuring 100% dirt terrain. Spanning 31.6 miles with just 460 feet of elevation gain, this scenic looped course consists of three laps around Barr Lake, providing runners with continuous views of the water and the stunning front range. With no major hill climbs and a max elevation of 5,106 feet, the Barr Lake 50K is designed for speed and consistency, making it an ideal choice for those chasing a PR or completing their first 50K. Three well-placed aid stations are available on each loop to keep you fueled and ready. With a generous 9-hour time limit, this ultra adventure is as inviting as it is rewarding, offering a memorable journey through the natural beauty of the Barr Lake trail.
30 KM Course
The 30K course at Barr Lake offers a scenic and approachable long-distance challenge, ideal for runners seeking a flatter, fast-paced trail experience. Covering 21.8 miles on 100% dirt terrain, this course consists of three loops around Barr Lake, treating runners to uninterrupted views of the lake and the Colorado front range. With only 460 feet of elevation gain, a max elevation of 5,106 feet, and no major hill climbs, this course is perfect for those looking to find their rhythm and enjoy the natural surroundings. Three well-placed aid stations are available along the route to keep you fueled, and an extended 8-hour time limit ensures an inviting experience for all paces. The Barr Lake 30K combines consistency with scenic beauty, making it a memorable Colorado trail race.
Half-Marathon Course
The Barr Lake Half-Marathon offers a scenic, beginner-friendly trail experience that wraps around the lake for two beautiful loops. Covering 13.1 miles entirely on dirt, this course keeps elevation gentle with just 187 feet of gain and a high point of 5,106 feet, making it an ideal race for those who want to enjoy the trail without steep climbs. With sweeping views of Barr Lake and the front range throughout, runners can settle into a steady rhythm, supported by three aid stations along the way. Plus, an 8-hour time limit invites all paces to take part in this memorable Colorado adventure, celebrating the joys of trail running at any level.
15 KM Course
The 15K course at Barr Lake is a single-loop adventure perfect for those looking to experience the beauty of trail running without major climbs. Spanning 9.1 miles on 100% dirt terrain, this course offers gentle elevation gain—just 190 feet—and reaches a max elevation of 5,106 feet, making it accessible and enjoyable for all paces. Runners are treated to expansive views of Barr Lake and the front range, with two well-placed aid stations to keep you fueled on your journey. With a generous 7-hour time limit, this course invites participants to embrace the relaxed, scenic vibe of Barr Lake’s trails, offering a rewarding yet approachable distance in the heart of Colorado’s natural beauty.
5 KM Course
The 5K course at Barr Lake is an inviting out-and-back route that offers a gentle introduction to trail running on 100% dirt paths. Covering 3.3 miles with only 40 feet of elevation gain and a max elevation of 5,104 feet, this course is designed to be accessible for runners and walkers alike. With stunning views of Barr Lake and the front range, this peaceful, non-technical course lets you take in the scenery without any major climbs. With a generous 6-hour time limit, it’s a relaxed, beginner-friendly option that’s perfect for enjoying a beautiful day on the trail.
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