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!

LA Tri Series 1 - Express Championship Series Triathlon California

March 15, 2020

LA Tri Series 2 - Express Championship Series Triathlon California

April 18, 2020

Legends Triathlon - TriEvents - California

Oct. 11, 2020

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

Race the whole triathlon series in 2020

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 TRI SERIES 2020, Legends Triathlon 2020

Corona Virus19 Updates

Message to our athletes:

Update 7/3/2020
Tri Events has made the difficult decision to cancel the 2020 Legends Triathlon due to the current state of the virus.

There are several factors that lead to this decision including our inability to secure the approval from the various county and municipal agencies. As well as, our concerns of ensuring the safety for our participants and volunteers.
People that have registered for any of the earlier races ( #1,#2, and #3 series) will be rolled into the respective race next year.

ie: if you registered for #1, #2 and #3 and requested to be put into legends 2020 you will now be put back into the respective race next year. A unique code will be sent to each individual when we are able to announce the 2021 event dates.


As you know Tri Events had to cancel the LA Tri Series 2020 do to the Corona Virus. I am in hopes and prayers that you are all well, happy and healthy.

The plan is to rollover your registration(s) to 2021 to their respective races next year.  (Some of you have already chosen to race at the Legends Tri).  When we open registration for next year’s events, I will send out an email letting you know when you can register, please respond back to me at or  I will then create a unique code just for you to use.


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

I am working and planning everyday for the Legends Triathlon 2020.

Carolyn Wolk
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.

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