Free race transfers, deferrals & participant transfers as late as the day before the race.

2025 Cal Tri Castaic Lake - 6.14.25
Castaic Lake is located in northern Los Angeles County, just 45 miles north of downtown L.A. and is the largest state water project reservoir in Southern California containing over 11,000 acres of parkland and open space habitat. Castaic Lake offers various water activities, including boating, jet skiing, and swimming. While there aren't many accommodation options directly on Castaic Lake itself, you can find a range of lodging options in the nearby

Location
Castaic Lagoon (Parking $12)

32132 Castaic Lake Drive

California 91384, USA

18 EVENT OPTIONS. 6 Olympic distance events (Triathlon, RunBikeRun, SwimBike, SwimRun, 1640 Yard Swim & 10K Run), 6 Sprint distance events (Triathlon, RunBikeRun, SwimBike, SwimRun, 400 yard Swim & 5K Run) and 6 Youth Sprint distance events (Triathlon, RunBikeRun, SwimBike, SwimRun, 400 yard Swim & 5K Run). Triathlon = swim + bike + run. Typically, the swim and run distances are standard but the bike distance varies from race to race. Check out the course maps for more detailed information.

TO DO. Downtown LA.
AIRPORT. Los Angeles (LAX)
AIR TEMPERATURE (AVG). 56 F / 87 F
WATER TEMPERATURE (AVG). 82F. Wetsuit legal (NO RESULTS). 

Cal Tri Kids Race Free!

Calling all future Olympians, tri-tastic heroes, & adventure seekers aged 7-17! Cal Tri Events is making dreams come true again in 2025 by offering FREE racing for young athletes at the majority of races in our series! That’s right, kids can splash, pedal, & stride their way to glory in a variety of exciting formats, including:

Triathlon:Conquer the swim, bike, & run course like a true multisport champion.
SwimBike: Master the power of water & wheels in this dynamic challenge.
SwimRun: Test your amphibious skills on land & sea.
400 Yard Swim: Conquer the water & showcase your aquatic prowess.
5K Run: Unleash your inner cheetah & take charge of the terrain.

This free-to-race initiative wouldn’t be possible without the generous support of our local and national sponsors and public-private partnerships. Now, we’re calling on YOU to spread the word!