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 57 exciting races across the region. Find your next race in California below and join the running community at these great events!
November 2026
Morro Bay Triathlon on November 1, 2026 features Olympic and Sprint triathlons with swim, kayak and SUP options, relay divisions, and a separate waterfront 5K.
A multisport race day at Newport Dunes offering twelve sprint and Olympic events, held at the same site since 1978 and serving as the Cal Tri Events National Championship.
Two triathlon options in Long Beach on E Ocean Blvd, featuring open-water swims, out-and-back bike courses open to traffic, and stocked aid stations; registration includes timing, a shirt, medal, and post race food.
Kendra's Race in Goleta features collegiate and open sprint triathlons plus a relay division and a 5k fun run on campus swim bike and run courses.
December 2026
A December triathlon in La Quinta with a Lake Cahuilla swim, a flat bike course including a lap at Thermal Raceway, and a run through Silver Rock Golf Course with mountain views.
Monthly updates for California
Get new running races (and updates) in your inbox every month.
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.
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.
Pasadena Triathlon at the Rose Bowl on Feb 7, 2027 features reverse and junior triathlons, a 5K, duathlon and relay options, with fundraising for Angel City Sports.
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.
A USAT sanctioned event in Exeter offering Short and Long triathlon distances plus 5k and 10k runs, with finishers items, age group awards, and local community support.
Multi-distance event at Woodward Park in Fresno with in-person and virtual duathlon and 5k options, shirts, medals, lunch, and race photos.
April 2027
IRONMAN 70.3 Oceanside is a triathlon in Oceanside, California featuring a sheltered harbor swim, a bike through Camp Pendleton, and a beachfront run finishing 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.
Triathlon at Lake Berryessa in Napa Valley on April 10 2027 offering Open, Sprint, Olympic and Long Course distances with USAT sanctioning.
A multi-event day at Lake Perris on April 11, 2027 with Olympic and Sprint triathlon, swim, run and run-bike-run options, plus camping and on-site parking.
A multi-distance swim bike run event at Millerton Lake with separate 5K and 10K races, USAT required for triathlon entrants, 200 participant cap and a vehicle entry fee.
A multisport festival at Lake Mission Viejo on April 25, 2027 offering triathlon, duathlon, aquabike, a 5K, mini sprint and kids races with USAT sanctioning.