2027 Cal Tri Lake Perris - 4.11.27 banner
2027 Cal Tri Lake Perris - 4.11.27 logo

2027 Cal Tri Lake Perris - 4.11.27 2027

Date
Sunday, April 11, 2027
Start time
8:00 AM start (Los Angeles)
Entry fee
From $33.86 · goes up to $38.86 on Oct 4, 2026
Included with entry
Includes a shirt
Fundraising
Takes optional donations when you register
Register on RunSignup

Registration is open.

We earn a small commission when you register through this link, at no cost to you. Details

Add to calendar: Apple or Outlook · Google

Events and entry fees

EventDistanceWhenEntry feeCap
5K–Apr 11, 20278:00 AM$33.86$38.86 after Oct 4, 2026–
Sponsor - 10x10 TentTriathlonOpen water swimApr 11, 20278:00 AM$500–
Sprint RunBikeRun (5km run, 15km bike, 5km run)AquabikeOpen water swimApr 11, 20278:00 AM$108.86$133.86 after Oct 4, 2026–
Sprint Swim (400 yards)–Apr 11, 20278:00 AM$33.86$38.86 after Oct 4, 2026–
Sprint SwimBikeAquathlonOpen water swimApr 11, 20278:00 AM$108.86$133.86 after Oct 4, 2026–
Sprint SwimRun–Apr 11, 20278:00 AM$108.86$133.86 after Oct 4, 2026–
Sprint TriathlonSprint TriathlonOpen water swimApr 11, 20278:00 AM$108.86$133.86 after Oct 4, 2026–
10K10KApr 11, 20278:20 AM$33.86$38.86 after Oct 4, 2026–
Olympic RunBikeRun (5km run, 39km bike, 10km run)DuathlonApr 11, 20278:20 AM$108.86$133.86 after Oct 4, 2026–
Olympic Swim (1640 yards)–Apr 11, 20278:20 AM$33.86$38.86 after Oct 4, 2026–
Olympic SwimBikeAquabikeOpen water swimApr 11, 20278:20 AM$108.86$133.86 after Oct 4, 2026–
Olympic SwimRun–Apr 11, 20278:20 AM$108.86$133.86 after Oct 4, 2026–
Olympic TriathlonOlympic TriathlonOpen water swimApr 11, 20278:20 AM$108.86$133.86 after Oct 4, 2026–

Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.

Register on RunSignup

The 5K fee goes up to $38.86 on Oct 4, 2026.

Race day planning

Entry fee schedule

  • 5K and Sprint Swim (400 yards) and 10K and Olympic Swim (1640 yards): $33.86 until Oct 4, then $38.86 until Jan 4, then $48.86 until Mar 4, then $58.86 until Apr 11.
  • Sponsor - 10x10 Tent: $500 until Apr 4.
  • Sprint RunBikeRun (5km run, 15km bike, 5km run) and Sprint SwimBike and Sprint SwimRun and Sprint Triathlon and Olympic RunBikeRun (5km run, 39km bike, 10km run) and Olympic SwimBike and Olympic SwimRun and Olympic Triathlon: $108.86 until Oct 4, then $133.86 until Jan 4, then $158.86 until Mar 4, then $183.86 until Apr 11.

Online registration closes Apr 11, 2027, unless the race fills first.

How the price compares

At $33.86, entry is about 32 percent below a typical 10K in California, which costs $50 right now.

Light and altitude

Sunrise on race morning is at about 6:24 AM, and the 5K starts at 8:00 AM.

Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.

Start location and course

Lake Perris State Recreation Area - Lot 9, Perris, CA 92571

The pin marks the address the race lists, which is usually the start. Course maps are the organizers' own.

Typical race-day weather

Around April 11 the day usually runs from 51°F at dawn to 76°F in the afternoon, with measurable rain on about 3% of days. Cold snaps dip to 42°F and hot years reach 88°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.

From the race's page

What the organizers of 2027 Cal Tri Lake Perris - 4.11.27 cover on their registration page, in brief.

Schedule and packet pickup

DONOTUSE-Schedule

Saturday, March 29, 2025. TIME (PDT) ACTIVITY LOCATION. 1:00 PM Mandatory Youth & Parent Meeting Online: Zoom Link. Saturday, April 5, 2025. TIME (PDT) ACTIVITY LOCATION. 7:30 AM Athletic Swim & Transition Clinic. Registration Required…

Course

DONOTUSE-Course

Sprint & Youth Sprint Swim (400 yards). Sprint & Youth Sprint Bike (9.2 miles). Sprint & Youth Sprint Run (3.1 miles). Olympic Swim (1640 yards). Olympic Bike (27.5 miles). Olympic Run (6 miles). Staging Area. Athletes are responsible to…

Full details on the race's RunSignup page

Race details

Where
Lake Perris State Recreation Area - Lot 9, Perris, CA 92571Map
Course
Road
Included with entry
T-Shirt
Donations
Accepted when you register
Distances
Sprint Triathlon, Olympic Triathlon, Triathlon, Duathlon, Aquabike, Aquathlon, 10K
Editions
2027 (Apr 11, 2027), 2026 (Apr 12, 2026), 2025 (Apr 6, 2025), 2024 (Apr 21, 2024), 2023 (Apr 23, 2023), 2022 (May 8, 2022)

Organize this race? Add details or a correction

Quick answers

When is 2027 Cal Tri Lake Perris - 4.11.27?
Sunday, April 11, 2027, starting at 8:00 AM.
How much does it cost?
Entry starts at $33.86 before processing fees, and rises to $38.86 on Oct 4, 2026.
When does registration close?
Online registration closes Apr 11, 2027, unless the race fills first.
Is the entry fee high for California?
At $33.86, entry is about 32 percent below a typical 10K in California, which costs $50 right now.
Do athletes get a shirt or medal?
Entry includes a shirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
Can I donate to a cause when I register?
Yes. The registration form offers an optional donation, usually for the charity or nonprofit the race supports. The race's own page names the cause.
What distances are offered?
Sprint Triathlon, Olympic Triathlon, Triathlon, Duathlon, Aquabike, Aquathlon, 10K.
Where does it start?
Lake Perris State Recreation Area - Lot 9, Perris, CA 92571.
Is there a course map?
Yes, the organizers publish the route on Ride with GPS; the link is under Start location and course.

From the organizers

2027 Cal Tri Lake Perris - 4.11.27. This race is enclosed within an 8,200-acre rugged playground close to several major population centers including Anaheim (55 miles), LA (70 miles) and San Diego (90 miles).

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.

TO DO. Lake Perris. Mission Inn Museum. March Field Air Museum.

AIRPORT. Ontario (ONT)

Read the full description on RunSignup