Cal Tri Castaic Lake

The 2026 Cal Tri Castaic Lake event, held at scenic Castaic Lake in northern Los Angeles County, offers a variety of triathlon and multisport races suitable for all ages and skill levels. Participants can choose from 18 events including Olympic and Sprint distance triathlons, RunBikeRun, SwimBike, SwimRun, standalone swims, and runs, with special youth categories available for ages 7-17. The course features a modified V-shaped swim in Paradise Cove, a bike route on low-traffic back roads with some U-turns, and a rolling trail run overlooking the lake.

The event supports local high school teams and fosters a welcoming atmosphere for beginners. Visit the organization's website for the most recent information.