California
California Triathlon Calendar 2025-2026
Explore the best triathlons in California for 2025-2026! Our updated list features 20 exciting races across the region. Find your next race in California below and join the running community at these great events!
November 2025
Experience the Optimism Cal Tri Newport Dunes in Newport Beach on November 2, 2025 with sprint and Olympic tri and run only options along the scenic Back Bay. Friendly vibe and flexible registration suit all levels.
Take on the Fall Classic Olympic distance triathlon in Long Beach on Nov 8, 2025 with a 1.5k swim, 40k bike and 10k run along the ocean. Chip timing, finisher medal and post race food await as you chase a podium and seaside views.
December 2025
Dive into the festive 39th Annual Tinsel Triathlon in Hemet, CA on Dec 14, 2025, a reverse sprint tri that finishes in a heated 25 meter pool. Choose solo, relay, challenged athlete or 5K only and earn a Tinsel finisher medal.
February 2026
Experience a reverse sprint triathlon that starts with a run, shifts to cycling, and finishes with a swim at Joint Forces Training Base in Los Alamitos. Prefer land only? Try the 5K run walk or team up in a three person relay for a lively community c..
March 2026
Celebrate the 20th year of the Pasadena Triathlon and Angel 5k at the Rose Bowl on March 7, 2026. Choose from multi distance triathlon, duathlon, kids races and relays, plus a charity 5k supporting Angel City Sports. Fun for all ages and abilities.
Take on the Bayshore 70.4 or Sprint Triathlon in Long Beach on March 7, 2026, with ocean swims, scenic bike and run routes and relay options for all paces. Enjoy chip timing, a finisher medal and post race food while you soak up coastal views.
Challenge yourself on the scenic Rocky Hill Triathlon in Exeter, California, featuring pool swims, rolling foothill bike routes and a hilltop finish. All ages welcome, great finisher swag and proceeds support local parks.
Join the iconic IRONMAN 70.3 in Oceanside CA for a scenic coastal course and high energy race day. Onsite PLAYTRI bike services handle rentals, tune ups and build and pack options so you can focus on the swim bike run.
April 2026
Join Cal Tri Lake Perris on April 12 for 18 race options from Sprint to Olympic distances, perfect for beginners and veterans. Youth races are free for ages 7 to 17 and the lakeside venue offers camping, parking, and wetsuit friendly water.
May 2026
Join Cal Tri Ventura on May 3, 2026 at Harbor Cove Beach for a festival of Olympic and Sprint triathlon, RunBikeRun, SwimRun, standalone swims and road runs. Free youth racing for ages 7 to 17 and convenient free parking.
June 2026
Race the 2026 Cal Tri at Castaic Lake on June 20 with 18 events from Sprint to Olympic and free youth races for ages 7 to 17. Swim, bike and run on scenic courses for all levels and enjoy a lively lakeside race day.
XTERRA Tahoe City is an off-road triathlon event held in the scenic Tahoe City, United States, as part of the XTERRA World Tour. The race features multiple distances, including a full-distance triathlon with a 1500m swim in the crystal-clear waters o..
Cal Tri La Crema in Guerneville offers sprint and Olympic triathlon and multisport options with a Russian River swim, scenic River Road bike and a vineyard finish at La Crema Estate. Athletes 21 and over get a complimentary wine pour.
July 2026
Celebrate sun and surf at the San Clemente Ocean Festival with a 5K beach run, one mile swim and the Dolphin Dash kids run. Family fun, surf contests, live music and vendors plus free parking and shuttle from San Clemente High School.
August 2026
Kick off triathlon season at the beginner friendly Hermosa Beach Triathlon on Sunday, August 9, 2026. Enjoy a scenic ocean swim, coastal bike and run with a finish right on the Pacific shoreline and lively Pier Avenue nearby.
Run, bike and swim along the Pacific with Channel Islands and mountain views at the Santa Barbara Triathlon and Beach Festival. Multiple distances and relays welcome all abilities and the finish brings music, food and beach fun.
September 2026
Take on the Mount Shasta Tinman Triathlon at beautiful Lake Siskiyou with a 740 yard swim, 16 mile bike and 3.2 mile run. Enjoy stunning mountain views, team and individual entries, with part of fees supporting local kids.
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