The World's Longest Running Triathlon Series!

Enjoy an easy going atmosphere…but with plenty of top notch competition too!

Home of the LA Championship & Tri Express Triathlon Series for 37 years!

Los Angeles Championship & Tri Express Triathlon Series

Be a part of the best California Triathlons & Multi-sport events!
Tri Events will be resuming in April 2022!
Stay tuned


LA Tri Series 1 - Express Championship Series Triathlon California

April 10, 2022

LA Tri Series 2 - Express Championship Series Triathlon California

May 1, 2022

LA Tri Series 3 - Express Championship Series Triathlon California

May 9, 2020

Legends Triathlon - TriEvents - California

Oct. 03, 2022

LA TRI SERIES - Option to Register for All 3 at Once

All events have a calm lake swim, scenic run with paved roads. Great family friendly atmosphere for participants and spectators. Some of the events you will find include:

  • Triathlon,
  • Aquabike,
  • Duathlon,
  • Relays,
  • Parent & Child sprint Triathlon,
  • 5K Run,
  • 8K Run,
  • 10K Run.

All events offer finisher medals, division medals 3 deep, nutrition for racing, plenty of water stations, race support, fruit and PB&J Sandwiches and snacks at the finish line!

LA TRIATHLON SERIES and The Legends Triathlon 2020 to 2021 to 2022

Finally, I’ve recently heard from the park and have the go ahead to request race dates.  They are for 2022.

Unfortunately there will be no Legends race in October 2021 due to the fact that I didn’t get confirmation for our usual 2nd week in the Month.  There just isn’t enough time anyway to promote it and have enough resources to put on the race in such short time.  It has been an extremely hard year and a half without our race’s to say the least.  With every weekend filled with events in So California it is wise for us not to push it and wait till 2022.  The dates I’ve requested (but not confirmed) yet are Sunday April 3 or 10,  May 1st, October 3rd.
Happy training and racing to you all.

5/11/2021 Update:
Hello.  Yes, still waiting on LA County Parks to get back to us with the approval of opening our race’s again.  We are aware of race’s in Southern California taking place.  I am hoping that the email will come soon for the OK.
I’ll be honest with you that it has been very difficult not having any revenue for 18 months.  Tough for any business……
We cannot open and operate on just rollovers.  We need your help to get the word out to all your racing buddies to come join our great race’s when we do open up so we can continue on.  We need your support.
Our race bags are still packed, signage is still set up. Medals still sitting next to the front door.  We are so ready…
Thank you kindly for your patience.

3/8/2021 Race Update:
As of now there is still no word from  from Bonelli Park.  I do know that there will be no races March, April & May.  I wish I had better news but this is still out of my control.  Thank you for your patience

1/19/2021 Message to our Athletes:
Since Tri Events had to make the difficult decision to cancel all 2020 events we have been holding tight to see when we can reopen and offer our great Triathlons back to you. We have had no word from the park when that will be.  Our race signs are still standing and ready to go, the goody bags (except for food) are still stuffed and sitting in our office.  We would like to give you race dates but it has been a no go so far for us.


A heartfelt thank you for all the support you have given to Tri Events every year and particular this year.  We look forward to seeing all of you at the starting line once again.

Hopes and prayers that you are all well, happy and healthy.

Carolyn Wolk,  Race Director
Be Safe*Take Care*Be Well

Tri Events is in its 37th year of promoting mulit-sports events in the Southern California area. The beautiful surroundings of Frank G. Bonelli Park in San Dimas, California, play host to great events – The Los Angeles Championship & Tri Express Triathlon Series (LA Tri-Series).  And The Legends Triathlon

Please Support the Sponsors and Clubs!
Race Bib Sponsor
Boulder Salt
Sponsor Boulder Salt
Sponsor AthleteLoungeLA
Retail Sponsor
Incycle Bicycles
Sponsor Incycle Bicycles
Sponsor Velofix
Sponsor Desoto
Clubs and Teams
California Triathlon
Sponsor California Triathlon
Pasadena Triathlon Club
Sponsor Pasadena Triathlon Club
Sponsor LA TRI Club
Volunteer Race Support
California Triathlon
Sponsor California Triathlon
Walnut High School
Sponsor Walnut High School
Diamond Bar High School
Sponsor Diamond Bar High School
Ganesha High School
Sponsor Ganesha High School

World Class Events

We pride ourselves as a grass roots organization and make it our goal to provide athletes and sponsors with a world class experience. We are honored to have many of the most recognized elite athletes in the sport call both “Bonelli” and the “LA Series” a regular stop in the annual triathlon circuit.

An Amazing Venue

Bonelli Park is the perfect venue for the ultimate triathlon course. The lake in the middle of LA is easily accessible, the bike course has rolling hills and no left turns to navigate against traffic. The run is a mixture of cross county and beautiful scenery.

Fun for Everyone

Our event has a super relaxed setting were spectators can mingle with the athletes afterwards and watch the run and bike course — all from really close to the finish line. We also get some of the biggest names in the sport competing in every event. It’s the perfect mix.

Keep in touch for deals and news!

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