Get ready for an exhilarating day of athleticism and camaraderie at the Stanford Treeathlon 2026, taking place on Saturday, February 14th, 2026, in beautiful San Mateo, California! This exciting event features two thrilling races: the Stanford Draft Legal Triathlon for Collegiate and Elite athletes at 10:00 AM, and the Classic Stanford Treeathlon, a non-draft legal race, starting at 1:00 PM. Athletes will tackle a challenging course that includes a 750m open-water swim, a 20km bike ride, and a 5k run.

Whether you're a seasoned triathlete or a newcomer to the sport, the Stanford Treeathlon promises an inclusive atmosphere with separate men's and women's waves, while also accommodating all participants regardless of gender identity. Make sure to mark your calendars for this fantastic event—it's a perfect opportunity to challenge yourself, meet fellow competitors, and enjoy the vibrant spirit of Northern California's triathlon community! Don't forget to check the race website for all the latest updates, registration details, and important information like packet pickup and water temperatures. Join us for a day filled with fun, fitness, and unforgettable memories!