Stanford Treeathlon 2026

Get ready to dive into the thrill of the Stanford Treeathlon, the premier collegiate triathlon experience in Northern California! With a 750m open-water swim, 20km bike, and 5k run, it’s the ultimate test of endurance and speed. Mark your calendars for February 14th, 2026, as we host two spectacular races – the Stanford Draft Legal Triathlon for the swift and strategic collegiate and elite athletes at 10:00am, and the Classic Stanford Treeathlon, open for all challengers, at 1:00 pm. Whether you identify with our men's or women's waves or have a different gender identity, we welcome you to compete in a community that celebrates diversity and strength. Note that participants must be 16 years or older on race day and should regularly check our website for essential updates, including registration details and FAQs for all your race-related queries. Join us for an unforgettable day where every stroke, pedal, and stride fuels the fiery spirit of competition!