Mammoth Spartan Trifecta Weekend

The Mammoth Spartan Trifecta Weekend, held in Mammoth Lakes, California, is a high-altitude obstacle course racing event set at 7,900 feet in the Sierra Nevada Mountains. Taking place over October 4-5, 2025, the weekend features three main race distances: the Sprint (5K with 20 obstacles), Super (10K with 25 obstacles), and Beast (21K with 30 obstacles), plus a kids' race. Participants face challenging obstacles like the Atlas Carry, A-Frame Cargo, Rope Climb, and Spear Throw, designed to test strength, agility, and endurance.

The event offers a vibrant festival atmosphere with music, food, and local outdoor activities, alongside the inaugural Spartan Super World Championship race. Visit the organization's website for the most recent information.