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 62 exciting races across the region. Find your next race in California below and join the running community at these great events!
October 2026
Mission Bay in San Diego hosts multisport races on October 11, 2026, including the USAT State Championships across age group, high school, and club divisions.
Mudskipper US SoCal Silverwood takes place in Hesperia California on October 11 2026 and features open water swim and swimrun races presented by Canaqua Sports. It is the first Mudskipper event on the US west coast.
Annual triathlon in Davis hosted by UC Davis Triathlon Club with sprint, relay, and mixed team relay options at Schaal Aquatics Center.
Trail festival at Piedras Pintadas Trailhead in San Diego offering races from a 1 mile kids run to a 50K, plus a Run Bike Run trail duathlon.
A fast, flat IRONMAN in Sacramento with a downriver 2.4-mile swim, a 112-mile bike through farmland and wine country, and a 26.2-mile run finishing at the State Capitol.
Monthly updates for California
Get new running races (and updates) in your inbox every month.
Trail duathlon at Lake Hodges in San Diego featuring Run | Bike | Run over about 23 miles, open to individual and team entries with a cupless aid station policy.
A multiformat race day at Lake Evans in Bakersfield on 10/18/2026 featuring triathlons, 5K and 10K runs, virtual options, and participant amenities.
A multi discipline race day at Dockweiler State Beach with 18 event options, Olympic and Sprint distances, and free youth races for ages 7 to 17.
Super sprint triathlon at Nipomo Highschool on October 18, 2026 featuring a 300 m swim, three bike laps and a closed course run for age group and collegiate divisions.
Triathlon at Lake Berryessa in Napa Valley featuring Open, Sprint, Olympic, and long course races set along valley vistas with local wildlife.
Triathlon day at Berkeley Marina with draft-legal and non-draft sprint races, plus three- and four-person relays on October 24, 2026.
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.
A campus-based event in Goleta combining collegiate and open sprint triathlons, a sprint relay, and a 5k run along the UCSB lagoon and trails.
December 2026
IRONMAN 70.3 La Quinta on Dec 6, 2026 features a Lake Cahuilla swim, a flat desert bike with a Thermal Raceway lap, and a palm-lined 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.
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.