California
California Triathlon Calendar 2025-2026
Explore the best triathlons in California for 2025-2026! Our updated list features 34 exciting races across the region. Find your next race in California below and join the running community at these great events!
October 2025
The Lake Hodges Off-Road Duathlon, held at the Piedras Pintadas Trailhead in San Diego, California, is a challenging off-road run-bike-run event covering approximately 23 miles. Participants start wit..
November 2025
The 2025 Optimism Cal Tri Newport Dunes, held at Newport Dunes Waterfront Resort & Marina in Newport Beach, California, is the longest-running triathlon at the same location since 1978. This event ser..
The Morro Bay Triathlon, held annually in Morro Bay, California, offers both Olympic and Sprint distance courses, including unique kayak and stand-up paddleboard (SUP) options. Now in its 14th year, t..
The Fall Classic Olympic Triathlon takes place in Long Beach, California, featuring an Olympic-distance course with a 1.5k swim, 40k bike, and 10k run. The event is held at 5415 E Ocean Blvd, utilizin..
December 2025
IRONMAN 70.3 La Quinta is a half-distance triathlon held in La Quinta, California, near Palm Springs. The race features a stunning swim in the calm, cool waters of Lake Cahuilla, offering clear mounta..
The 39th Annual Tinsel Triathlon, held in Hemet, California, is a well-established reverse sprint pool triathlon ideal for triathletes of all levels. This December event features a 5K run on a scenic,..
Rudolphs Aquabike is a USAT-sanctioned Super Sprint aquabike event held in Visalia, California. The race features a 400-yard swim in a heated pool followed by a flat 6-mile bike course consisting of f..
March 2026
The Pasadena Triathlon & Angel 5k, held at the iconic Rose Bowl Stadium in Pasadena, California, celebrates its 20th year in 2026. This family-friendly event features a variety of race options includi..
The Bayshore 70.4 Triathlon, held in Long Beach, California, is an early-season race designed to kickstart athletes' triathlon training. The event features a long course 70.4 triathlon with a 1.2-mile..
The Rocky Hill Triathlon, held in Exeter, California, is a challenging and scenic event showcasing the Sierra Nevada foothills. Now in its 11th year, it offers multiple race options including a Short..
IRONMAN 70.3 Oceanside is a premier triathlon event held in Oceanside, California, offering athletes a scenic and challenging course. The race features a 1.2-mile swim in the sheltered Oceanside Harbo..
April 2026
The 2026 Cal Tri Lake Perris event, held at Lake Perris State Recreation Area in Perris, California, offers a variety of triathlon and multisport races suitable for all ages and skill levels. Particip..
May 2026
The 2026 Cal Tri Ventura, held at Harbor Cove Beach in Ventura, California, offers a variety of multisport events including Sprint and Olympic distance triathlons, RunBikeRun, SwimBike, SwimRun, and s..
June 2026
The 2026 Cal Tri Castaic Lake event, held at scenic Castaic Lake in northern Los Angeles County, offers a variety of triathlon and multisport races suitable for all ages and skill levels. Participants..
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