California
California Triathlon Calendar 2026-2027
Monthly updates for California
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Explore the best triathlons in California for 2026-2027! Our updated list features 68 exciting races across the region. Find your next race in California below and join the running community at these great events!
August 2026
Experience one of Santa Cruz County's oldest triathlons at Seacliff State Beach. This USAT sanctioned event features a unique swim around a historic cement ship and supports local lifeguard and youth water safety programs.
A multisport festival at East Beach in Santa Barbara featuring ocean swims with Channel Islands views, a bike course with climbs and fast straights, and a beachfront run that finishes with music and refreshments.
September 2026
A sprint-distance triathlon at Lake Siskiyou near Mount Shasta featuring a 740 yard swim, a 16 mile bike and a 3.2 mile run. A portion of registration proceeds supports the Dunsmuir Rotary Club and Wildcat Weekender.
Experience a scenic triathlon in the Sierra mountains featuring a lake swim, a three loop bike course, and a rolling road run. This California event includes a post race lunch and awards for various age groups.
A multi-discipline race day at Liberty Station featuring Olympic and Sprint triathlons, aquabike, duathlon, aquathlon, relays and a 5K, with swim in San Diego Bay and bike and run courses along Point Loma and the waterfront.
A gravel triathlon at Granite Beach, Folsom Lake with lake swims, off road gravel bike courses and trail running. Sprint and Olympic distances are USAT sanctioned and there is a non USAT SUP and kayak sprint option.
Experience a multisport challenge at Shaver Lake with triathlon, duathlon, and running events held at Camp Edison. Enjoy hilly bike routes and scenic trail runs followed by a tri tip lunch and finisher celebrations.
Experience a scenic multisport event at Crystal Cove State Beach featuring swim legs in the Pacific Ocean and a closed bike course on the Pacific Coast Highway. Choose from triathlon duathlon aquabike or trail run options.
Experience a 12 hour adventure race through the Marin Headlands and San Francisco Bay. Teams of one to four navigate by map and compass while trekking mountain biking and paddling across 50 miles of historic coastal terrain.
A community-run super-sprint triathlon in Albany, California, with main and short courses for kids and adults. The volunteer-powered event raises funds for Albany Middle and High School athletics and keeps year-by-year results and photos.
Experience a unique race format at Civic Center Park featuring a reverse triathlon, a kids multisport event, and a standalone 5K. All participants receive medals and chip timing in this community athletic gathering.
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.
October 2026
The 38th XTERRA Wetsuits Mission Bay Triathlon in San Diego on October 11, 2026 features sprint, international, duathlon, aquabike, aquathlon, youth races and a 5K while hosting the 2026 USA Triathlon State Championships. Proceeds benefit Life Sports..
Mudskipper US SoCal Silverwood in Hesperia, California on October 11, 2026 features open water swim and swimrun races as the series first west coast event. It is part of the 2026 Mudskipper SwimRun Challenge in the United States.
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.
Cal Tri LA at Dockweiler State Beach offers 18 multisport options across Olympic, sprint, and youth sprint distances, with swims, bikes, runs, and vendor opportunities along the Playa del Rey coast.
A community event in Valencia on October 25, 2026 featuring running, biking, and a virtual option, with distances from a 1K kids run to a 62 mile ride. Expo, costume awards, aid stations, and route support are provided.