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!
September 2026
A 12 hour USARA sanctioned adventure race in Sausalito combining kayaking, mountain biking, trekking, and map and compass navigation across Marin and San Francisco Bay.
Community triathlon in Albany CA on 20 September 2026 offering a Super Sprint, a mini triathlon for kids and relay team options.
A reverse triathlon at Civic Center Park and Aquatic Center featuring a 5k run, 12 mile bike and 150 yd swim, plus a kids triathlon and a stand-alone 5K.
Tri to Inspire is a short distance triathlon in Santa Rosa on 09/27/2026 featuring pool swims followed by bike and run courses. It offers sprint, mini sprint, relay and family divisions, with proceeds supporting the Inspiration Sports Foundation.
Experience a scenic triathlon in Santa Cruz featuring Olympic and Sprint distances with a coastal course that supports local youth and collegiate athletic programs.
Monthly updates for California
Get new running races (and updates) in your inbox every month.
Sprint triathlon on September 27, 2026 featuring a 500 yards swim, a 12.5 miles bike leg and a 3 miles run with chip timing and a finisher medal.
October 2026
A three day weekend at McNear’s Beach Park combining an Olympic distance triathlon, a trail half marathon, a kids fun event, and a combined challenge.
An annual multisport event at Mission Bay and Fiesta Island, the 2026 XTERRA Wetsuits Mission Bay Triathlon hosts USA Triathlon State Championships and offers triathlon, duathlon, aquabike, aquathlon, youth races, and a 5K, produced for Life Sports F..
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.
IRONMAN California in Sacramento features a downriver 2.4 mile swim, a flat 112 mile bike through farmland and a 26.2 mile run finishing at the State Capitol.
A trail Run, Bike, Run at Lake Hodges near San Diego combining a 10k run, a 22k bike and a 5k run. Entries are available for individuals or teams; the event is cupless so participants should bring a personal hydration vessel.
Lake Evans Triathlon on 10/18/2026 in Bakersfield features multiple on-site and virtual race formats from 5K runs to longer multisport courses, with finisher medals, event shirts, a meal, music and a team competition.
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.
Experience a scenic triathlon at Lake Berryessa in Napa Valley with distances ranging from Open to Long Course through a landscape home to bald eagles and varied 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.