Cal Tri Castaic Lake
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Event details
The 2026 Cal Tri Castaic Lake takes place on June 20, 2026. The event offers 18 race options across Olympic, Sprint, and Youth Sprint formats. Triathlon events combine swim, bike, and run. Swim and run distances are typically standard; bike distances vary by event. Multiple youth events are offered free to ages 7-17 at this race; several youth events list 25 spots available and registration opening May 23, 2026.
- Sprint swim: 400 yards
- Sprint RunBikeRun: 5 km run, 15 km bike, 5 km run
- Sprint run: 5K
- Olympic swim: 1640 yards
- Olympic RunBikeRun: 5 km run, 40 km bike, 10 km run
- Olympic run: 10K
Location and logistics
The venue is Castaic Lagoon at Castaic Lake, 32132 Castaic Lake Drive, Castaic, California 91384. Parking is listed at $12. The page notes average air temperatures of 56 F to 87 F and an average water temperature of 82 F. Some bike courses list a bike elevation of 3,211 feet. A sponsor option for a 10x10 tent is available; other tent sizes can be requested. Visit the organization's website for the most recent information.