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Intermountain Endurance is a small northern California race organiser based in Burney, in the shadow of Burney Mountain and the Lassen National Forest. Its line-up of events includes the Burney Mountain 100, the Burney Mountain Gravel Grinder, Burney Basin Days, the Great Shasta Rail Trail, and a Weekend at Burney, run on forest trails, mountain roads and rail trail in Shasta County. All of the races are cupless, so runners carry a reusable cup to the aid stations. Registration for the 2027 Burney Mountain 100 is open now, and the organiser offers free entry to any Indigenous or Native American runner, for any race, any distance, in any year. Live timing is provided on race day through a public link.
Terrain
Route
Race Day
What to bring
Reusable cup (all races are cupless at the aid stations)
reusable cup
What you get
Chip timing
Cupless race, bring your own reusable cup
Live timing link published on race day
Free race registration for Indigenous / Native American runners, any race, any distance, any year
On the day
Other questions
Intermountain Endurance is a small race organiser based in Burney, California. It operates as a nondiscriminatory recreation provider under special use authorisation from the Lassen National Forest, and the races are held with the support of sponsors including Sierra Pacific Industries, Pacific Gas and Electric, and Hammer Nutrition.
No. Intermountain Endurance offers free race registration to any Indigenous or Native American runner, for any of its events, at any distance, in any year. Email [email protected] for details on how to claim your free registration.
The races are centred on Burney in Shasta County, northern California, in and around the Lassen National Forest and the Burney Mountain area. The Great Shasta Rail Trail event follows the rail trail corridor nearby.
Yes. Intermountain Endurance publishes a live timing feed on race day through Relentless Timing. The link is https://relentlesstiming.com/live/intermountainendurance/ and it is also posted on the organiser website.
The events mix forest trails, mountain roads and gravel, with the Burney Mountain Gravel Grinder running on gravel surfaces and the trail events on forest singletrack and doubletrack. Conditions are typical of the southern Cascades, with a mix of soft forest floor, rock and packed dirt.
Entry fee
Registration isn't open yet. We'll show pricing when the organiser confirms.Burney, USA
Expected October 2027
Provisional date, around Oct 2More races like this one
Not open yet
