OUR RACES
At Intermountain Endurance, we organize and host a variety of races including ultra running, trail running, and burro racing. Our races are designed to challenge and inspire athletes of all levels. Click here to learn more about our upcoming races.
The Great Shasta Rail Trail 10k. 30k, and 50k
July 26th 2025
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Weekend at Burney 12hr, 24hr, plus 5.3 ish mile loop and Burro race options
October 24th,25th 2025
Burney Mountain 100 June 20th,21st 2025
(will have a couple options with less milage coming soon!)
We are so excited for the second Great Shasta Rail trail run! This is a relatively flat course with very nice footing. All distances are out and back. Starting in McCloud with views of Mt Shasta. Great course for a first go at the distance, or to set a new PR. It is pretty straight forward...literally. Beautiful crisp mountain air surrounded by incredible views. All runners will get a shirt and a after race meal. All finishers will get a finisher medal!
This run benefits the Great Shasta rail trail. It is a beautiful scenic route. We would like to help preserve the rail trail for continued use, and keep its rich history alive. To learn more about the rail trail go to https://www.greatshastarailtrail.org/. This is a vacation destination! So, visit some of the amazing historic natural sights while you're here! Burney Falls, Lasson Nation Park, Subway cave, destination fly fishing, and so much more!
Register on Ultrasignup.com
The 12-hour and 24-hour endurance run/walk/crawl is in Lassen National Forest and features a looped 5.3-mile course, providing a challenging and scenic environment for runners. The course takes runners through the natural beauty of the forest, showcasing its lush greenery, and gorgeous fall colors, diverse wildlife, and breathtaking landscapes. With each lap, runners will experience the varied terrain, including rolling hills, wooded areas, lava flows, a view of Mt Shasta on a clear day and a beautiful starry sky at night. The course consists of forest rd, and rail trail. The looped course design allows participants to gauge their progress and a convenient fully stocked aid station/ start finish placed along the route for rest, hydration, and fueling. A party on the trail! Overall, it promises to be an exhilarating and demanding race amidst the stunning backdrop of Lassen National Forest.
Register on Ultrasignup.com
A Journey Through Lassen National Forest and the Thousand Lakes Wilderness
Experience Northern California’s most scenic 100-mile race, where breathtaking views, diverse terrain, and awe-inspiring vistas await at every turn. Starting and finishing at the Burney Mountain Guest Ranch, this looped course takes runners through some of the most pristine wilderness areas in the region, including the stunning Burney Basin and the rugged Thousand Lakes Wilderness.
The race climbs and descends a cumulative 15,000 feet of elevation, providing an exhilarating challenge for ultrarunners. From the peaks of Burney Mountain, you’ll be treated to panoramic views of Mount Lassen and Mount Shasta, as well as the Hat Creek Rim and vast lava flows stretching below.
The early start time allows runners to fully absorb the beauty of the area at dawn, when the mountains, forests, and lakes are bathed in soft morning light. The varied terrain—ranging from rocky ridgelines to lush forest floor—provides an ever-changing backdrop as you tackle the rugged landscape.
This 100-mile race isn't just a test of endurance, but also a celebration of the incredible natural beauty of Northern California. Whether you’re running through dense forests or above the tree line, each mile will take you deeper into the heart of one of the most awe-inspiring landscapes in the country.