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Date:
Sat, Feb 14, 2026 at 11:00 AM – 5:00 PM
Location:
1901 J Hart Clinton Dr
San Mateo, California
94401
United States
OpenStreetMap Google Maps
Links:
stanfordtreeathlon.com Register at runsignup.com
Tags:
30 Miles Triathlon

Come and join in the fun of one of the best collegiate triathlons in Northern California! The race is a 750m open-water swim, a 20km bike, and a 5k run.

There are two separate races taking place on February 14th, 2026: The Classic Race and the Draft-Legal Race. The Classic Stanford Treeathlon, a open non-draft legal race for collegiate athletes, age group athletes, and relay teams, will start at 11:00 am. The Stanford Draft Legal Triathlon for advanced Collegiate and Elite athletes will start at 08:30 am. In each race, we have two categories of waves, men's and women's. While these wave start categories are binary, we recognize that not all people fit within that and we will accommodate all participants regardless of gender identity.

This is the registration for the Classic Race. Registration for the Draft Legal event is a separate registration link. Please check the race website for the Draft-Legal Registration link and additional details around the event.

You must be 16 years old on race day to participate in this race.

Please be sure to check the race website for packet pickup information and schedule changes. Answers to frequently asked questions (water temps, equipment, etc.) can be found here: http://www.stanfordtreeathlon.com/faqs.

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    Create a Race Group/Team

    During registration, you will be asked the question: "Would you like to join or create a Group/Team?" Select “Yes.”

    Choose a Group Type:

    Friends and Family

    Team Building

    Student/Youth Groups

    Come up with a Group Name. Some ideas could be:

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    Complete registration. Your group is now active!

    Join a Group

    Method 1

    During registration, you will be asked the question: "Would you like to join or create a Group/Team?" Select “Yes.”

    Choose the Group Name you would like to join.

    Method 2

    On the event page, navigate to the menu tab labeled “More.” Select “Group/Teams.”

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