Mar
9
Sun
2025
March Triathlon Series 2025 @ Lake Lopez
Mar 9 all-day
March Triathlon Series 2025 @ Lake Lopez

Brought to you by the Cal Poly Triathlon Club, a race open to all.

The March Triathlon Series is the longest-running collegiate triathlon on the West Coast. The event started as a senior project in 1998 and was held on campus at Cal Poly. Race participants joined from Cal Poly, Santa Barbara, and Cal Berkeley with a total of 15 racers. 

MTS is proudly hosted by the Cal Poly Triathlon Team. All proceeds from the event help provide our athletes low-cost club team membership, affordable gear, as well as discounted race entries and travel fees to collegiate races throughout California and to Collegiate Nationals.

 

Race day is Sunday, March 9th, 2025, at the Lopez Lake Marina.

Registration closes Thursday, March 6th at 11:59pm

Apr
3
Thu
2025
**UPDATED | First Club Meeting 2025 @ Velo Pro
Apr 3 @ 6:00 pm – 7:30 pm
Apr
4
Fri
2025
IRONMAN 70.3 California Oceanside 2025
Apr 4 @ 11:00 pm – 6:30 am
IRONMAN 70.3 California Oceanside 2025 @ Oceanside | California | United States

IRONMAN 70.3 California 

Oceanside, California offers triathletes a chance to race in the city that birthed the sport in the early 1970's in Mission Bay. Oceanside is located at the northern end of San Diego's North County, which includes the beach communities of Del Mar, Cardiff, Encinitas, and Carlsbad—home to a mixture of surf, triathlon, and beach culture. Just half an hour south lies the city of San Diego, with its world-famous zoo, parks, and other attractions to fill a spring break vacation. Just two hours away from the local mountains, skiing and snowboarding are other options.

Apr
26
Sat
2025
2025 Lake San Antonio Triathlon @ Lake San Antonio
Apr 26 all-day
2025 Lake San Antonio Triathlon @ Lake San Antonio

Lake San Antonio Triathlon

Saturday, April 26, 2025

Alpha Win is proud to announce that it will be adding a new race to its California lineup: the Alpha Win Lake San Antonio Triathlon! Standing by the motto, “A Distance For Everyone,” Alpha Win Lake San Antonio features Sprint, Olympic and Long Course triathlon distances, coupled with aqua bike and duathlon. Just a short drive from Paso Robles, come swim, bike, and run through the rolling hills and beautiful scenery that is Lake San Antonio!

 

Alpha Sprint:  750 meter swim; 12.4 mile bike; 3.1 mile run

Alpha Olympic: 1,500 meter swim; 24.8 mile bike; 6.2 mile run

Alpha Long Course: 1.2 mile swim; 52 mile bike; 13.1 mile run

 

 

Apr
27
Sun
2025
Orange County Triathlon/Duathlon 2025 @ Lake Mission Viejo
Apr 27 all-day
Orange County Triathlon/Duathlon 2025 @ Lake Mission Viejo

2025

The race starts with a swim in beautiful Lake Mission Viejo for the triathletes and a quick 2k run on Aliso Creek Bike Path for the duathletes.

The bike courses make their way up El Toro Road and into Santiago Canyon where the turnaround is in sight of Irvine Lake. Athletes will fly back to T2 located at ithe ntersection of El Toro Road and Marguerite.

The run course starts off downhill but don't be fooled. What goes down has to go up. Athletes will make their way back to Lake Mission Viejo via a mixture of road, trails, and walking paths. Hills for sure.

Finish downhill into the parking lot at Lake Mission Viejo and sprint it out along the beach to the finish line!

May
4
Sun
2025
Ventura Tri 2025 @ Harbor Cove Beach
May 4 all-day
Ventura Tri 2025 @ Harbor Cove Beach

 

There are 14 event options, including:

  • Sprint Distance Triathlon
  • Olympic Distance Triathlon
  • Sprint Relay
  • 5k
  • And more! see all events on the website below

More Information and Registration here: https://ventura.californiatriathlon.org/

May
31
Sat
2025
Escape from Alcatraz Triathlon
May 31 @ 3:45 am – Jun 1 @ 4:45 am
Escape from Alcatraz Triathlon

Escape from Alcatraz™ Triathlon Set for Exciting Return to San Francisco Bay May 31 through June 1, 2025


SAN FRANCISCO – The legendary Escape from Alcatraz™ Triathlon is set to make a return to the streets and waters of San Francisco on Sunday, June 1. Organized by IMG, a global sports, events and representation company, the iconic race will be celebrating its 44th year in the scenic Bay Area where over 10,000 athletes are anticipated to vie for one of the 2,000 coveted spots through a Random Drawing. Registration for the Random Drawing opens on Thursday, Sept. 26 at 9:30 am PST (Pacific Standard Time) and will run through Friday, Dec. 13 at 11:59 p.m. PST (Pacific Standard Time).

Aug
10
Sun
2025
2025 Hermosa Beach Triathlon @ Hermosa Beach, CA
Aug 10 all-day
2025 Hermosa Beach Triathlon @ Hermosa Beach, CA | Carpinteria | California | United States

The Hermosa Beach Triathlon is an entry level event that welcomes triathletes of all skill levels. Whether you are new to the sport of triathlon or looking for summer training, this event is for you. The event features a beginner friendly course in beautiful Hermosa Beach, California.

Bring your friends and family to watch you compete and enjoy a nice walk down iconic Pier Avenue, have lunch, sun bathe, or jump in the refreshing Pacific Ocean after the race. Your options here are endless!

Sep
6
Sat
2025
IRONMAN 70.3 Santa Cruz 2025
Sep 6 @ 11:00 pm – 6:30 am
IRONMAN 70.3 Santa Cruz 2025 @ Oceanside | California | United States

IRONMAN 70.3 Santa Cruz

Santa Cruz embodies the laid-back, sandy-feet, “no shirt, no problem” culture that makes the California Coast so uniquely… California. Even passionate, driven triathletes (who’ve made Type 2 fun an art) pause their watches to take in the September sunset over the harbor. IRONMAN 70.3 Santa Cruz has a long history in Santa Cruz, merging a chill, local-race feel with the high-end IRONMAN experience athletes expect. The course features a 1.2-mile ocean swim around the wharf, a 56-mile rolling bike along scenic Highway 1, and a flat half-marathon through parks and along coastal bluffs, finishing at the famous beach finish line. If it’s a laid-back season closer you crave, look no further than IRONMAN 70.3 Santa Cruz for the ultimate surf city experience.