The oldest and most historic triathlon series in the United States returns in 2024 for it's 39th running.  The LA Tri-Series features courses for all levels of training and competition.   Whether you are a new triathlete getting started at our Super Sprint; a seasoned triathlete ready to shake off Winter's cold and get back on the course, or looking for a relay with friends - this series is for you.

All LA Tri-Series events feature a flat, safe, and easy open water swim in Puddingstone Reservoir; laps around Frank G. Bonelli Regional Park with all right hand turns, limited traffic and safe roads; a run through the parks trail system to the finish in Picnic Valley.

Become a part of triathlon history, a great sport and good people, and join us at any of the three LA Tri-Series events.

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