Mammoth Spartan Trifecta Weekend
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About the race
Mammoth Spartan Trifecta Weekend in Mammoth Lakes, California, invites athletes to tackle high-altitude obstacle course racing in the Sierra Nevada. The event features three Spartan distances on courses shaped by rugged terrain: a 5K Sprint with 20 obstacles, a 10K Super with 25 obstacles, and a 21K Beast with 30 obstacles, plus a Kids Race. Set at about 7,900 feet, courses mix off-road trails and obstacles such as Atlas carry, rope climbs, barbed wire crawls, and spear throw.
The weekend also hosts the inaugural 10K Super World Championship, exclusive swag, a festival atmosphere, and a Trifecta Pass letting you race all three distances. Visit the organization's website for the most recent information.