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 65 exciting races across the region. Find your next race in California below and join the running community at these great events!
November 2026
A UCSB-hosted race day in Goleta featuring sprint triathlon races, a 5k fun run, and charitable support for a memorial fund.
December 2026
IRONMAN 70.3 La Quinta in California features a Lake Cahuilla swim, a flat desert bike course with a Thermal Raceway lap, and a run through Silver Rock Golf Course.
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.
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 on April 3, 2027 in Oceanside, CA features 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-option triathlon day at Lake Perris State Recreation Area featuring sprint and Olympic swim, bike, run, and RunBikeRun events.
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 multi-discipline race day at Lake Mission Viejo featuring Olympic and sprint triathlons, duathlon, aquabike, a 5K and youth races on varied lake and canyon courses.
Multi-discipline event at Lake Woollomes near Delano CA with sprint and Olympic triathlons, duathlon, aquathlon, aquabike, 5K/10K runs and virtual options.
May 2027
A multi-option triathlon event in Ventura on May 2, 2027, offering twelve sprint and Olympic format races at Harbor Cove Beach.
A multi-discipline triathlon festival at Mission Bay San Diego on May 2, 2027 offering sprint and international distances, relays, kids races, and a 5K.