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| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| 5K | 5K | Jun 19, 20278:00 AM | $33.86$38.86 after Dec 19, 2026 | – |
| Sponsor - 10x10 Tent | – | Jun 19, 20278:00 AM | $500 | – |
| Sprint RunBikeRun (5km run, 15km bike, 5km run) | – | Jun 19, 20278:00 AM | $108.86$133.86 after Dec 19, 2026 | – |
| Sprint Swim (400 yards) | – | Jun 19, 20278:00 AM | $33.86$38.86 after Dec 19, 2026 | – |
| Sprint SwimBike | – | Jun 19, 20278:00 AM | $108.86$133.86 after Dec 19, 2026 | – |
| Sprint SwimRun | – | Jun 19, 20278:00 AM | $108.86$133.86 after Dec 19, 2026 | – |
| Sprint Triathlon | – | Jun 19, 20278:00 AM | $108.86$133.86 after Dec 19, 2026 | – |
| 10K | 10K | Jun 19, 20278:20 AM | $33.86$38.86 after Dec 19, 2026 | – |
| Olympic RunBikeRun (5km run, 40km bike, 10km run) | – | Jun 19, 20278:20 AM | $108.86$133.86 after Dec 19, 2026 | – |
| Olympic Swim (1640 yards) | – | Jun 19, 20278:20 AM | $33.86$38.86 after Dec 19, 2026 | – |
| Olympic SwimBike | – | Jun 19, 20278:20 AM | $108.86$133.86 after Dec 19, 2026 | – |
| Olympic SwimRun | – | Jun 19, 20278:20 AM | $108.86$133.86 after Dec 19, 2026 | – |
| Olympic Triathlon | – | Jun 19, 20278:20 AM | $108.86$133.86 after Dec 19, 2026 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The 5K fee goes up to $38.86 on Dec 19, 2026.
Online registration closes Jun 19, 2027, unless the race fills first.
At $33.86, entry is about 21 percent below a typical 10K in California, which costs $42.99 right now.
A typical finisher at a 10K in California runs 1:05:18, about 10:31 a mile, based on 285 races with published results. Women typically finish in 1:09:57 and men in 59:47.
Sunrise on race morning is at about 5:41 AM, and the 5K starts at 8:00 AM. The start sits about 2,160 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Castaic Lake Paradise Cove, Castaic, CA 91384
The pin marks the address the race lists, which is usually the start. Course maps are the organizers' own.
Around June 19 the day usually runs from 60°F at dawn to 87°F in the afternoon, with measurable rain on about 1% of days. Cold snaps dip to 56°F and hot years reach 97°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
What the organizers of 2027 Cal Tri Castaic Lake - 6.19.27 cover on their registration page, in brief.
Schedule and packet pickup
Saturday, June 13, 2026. TIME (PDT) ACTIVITY LOCATION. 1:00 PM Mandatory Youth & Parent Meeting Online: TBD. Friday, June 19, 2026. TIME (PDT) ACTIVITY LOCATION. 7:30 AM Athletic Swim & Transition Clinic. Registration Required Castaic…
Course
Sprint & Youth Sprint Swim (400 yards). Sprint & Youth Sprint Bike (6.7 miles). Sprint & Youth Sprint Run (3.2 miles). Olympic Swim (1640 yards). Olympic Bike (23.3 miles). Olympic Run (6.4 miles). Staging Area. Athletes are responsible to…
Organize this race? Add details or a correction
2027 Cal Tri Castaic Lake - 6.19.27
12 EVENT OPTIONS. 6 Olympic distance events (Triathlon, RunBikeRun, SwimBike, SwimRun, 1640 Yard Swim & 10K Run) and 6 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.
CASTAIC LAKE.