California
California Triathlon Calendar 2026-2027
Monthly updates for California
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in California for 2026-2027! Our updated list features 58 exciting races across the region. Find your next race in California below and join the running community at these great events!
November 2026
Kendra's Race at UCSB features sprint triathlon categories and a 5k fun run with a swim at Campus Point, a two lap bike circuit, and a 5k loop around the lagoon.
December 2026
Half-distance triathlon in La Quinta with a swim in Lake Cahuilla, a flat desert bike course including a lap at Thermal Raceway, and a run through Coachella Valley.
A long running reverse sprint pool triathlon in Hemet, California with a 150 meter pool finish and a separate 5K on a flat, fast course. Awards follow the races and finishers receive a unique Tinsel medal.
January 2027
A New Year event at Granite Beach featuring a 2 mile run 5 mile bike 2 mile run duathlon and a 5K trail run with lake views. Awards include overall champions and age group prizes.
An off-road run, bike, run event at Granite Beach, Folsom Lake SRA on January 23, 2027 featuring scenic running trails and a mostly single track mountain bike course; entries include a TBF beanie and post race food.
Monthly updates for California
Get new running races (and updates) in your inbox every month.
February 2027
A multisport event at Granite Beach with three 2-mile runs and two 5-mile road bike legs, age group and relay awards, and a custom TBF running hat for each athlete.
Multi-discipline race day at Rose Bowl Stadium on February 7, 2027 featuring triathlon, duathlon, junior events, relays and a 5k run.
March 2027
Collegiate triathlon in Northern California hosted by the Stanford University Triathlon Team with a 750 m swim, 20 km bike and 5 km run on March 7, 2027.
Experience an early season triathlon in Long Beach featuring a calm bay swim and scenic oceanfront paths. Choose from a 70.4 mile long course or a sprint distance with individual and relay options.
Multi-distance triathlon in Exeter CA with short and long multisport courses plus 5k and 10k runs, USAT sanctioned and offering finisher hoodies and age group awards.
April 2027
A half-distance triathlon on April 3, 2027 in Oceanside, CA with a sheltered harbor swim, a bike through Camp Pendleton, and a beachfront finish on the Strand.
A lakeside triathlon at Granite Beach with swim, bike on closed roads, and shoreline runs; wetsuits are recommended and race entries include gear and a post-race meal.
Experience a USAT sanctioned triathlon at Lake Berryessa with distances ranging from Open to Long Course through the scenic vistas of Napa Valley.
A multi-option triathlon day at Lake Perris State Recreation Area on April 11, 2027 offering twelve Sprint and Olympic events, on-site camping, and paid parking.
A multi-sport festival at Lake Mission Viejo on April 25, 2027 offering Olympic and sprint triathlons, a duathlon, aquabike events, relays, a 5K, mini sprint and kids races. Courses use lake swims, canyon and neighborhood bike routes, and trail runs.
May 2027
A multi-option triathlon event at Harbor Cove Beach, Ventura on May 2, 2027, offering 12 sprint and Olympic formats plus standalone swims and runs.
Spring Sprint Triathlon in San Diego on May 2, 2027 features triathlon, duathlon, aquabike, a 5K and kids races with USAT sanctioning and event amenities.
Olympic-distance triathlon and aquabike at Granite Beach, Folsom Lake with a 1.5K swim, 40K scenic bike and 10K trail run.
Sprint and Super Sprint triathlons at Folsom Lake with lake swim, road bike on closed park roads, and a trail run plus race perks and age group awards.
Weekly Wednesday series at Leadbetter Beach Park from May 19 to Aug 25, 2027 featuring a 5k run, multiple swim distances, kids 1k, sand sprints, and a post-race party.