California
California Triathlon Calendar 2025-2026
Explore the best triathlons in California for 2025-2026! Our updated list features 25 exciting races across the region. Find your next race in California below and join the running community at these great events!
June 2025
The 2025 Cal Tri Castaic Lake event, taking place at Castaic Lake in California, features a variety of triathlon and running events suitable for all ages and skill levels. Participants can choose from..
The Black Butte Triathlon is set to take place on June 14, 2025, in Corning, California. This exciting event features three race options: an Olympic Distance Triathlon, a Sprint Distance Triathlon, an..
The 2025 La Crema Cal Tri Sonoma is a multi-sport event taking place in Guerneville, California, featuring a variety of races including Sprint and Olympic triathlons, SwimBike events, and a 5K run. Th..
The 2024 Wolfpack Super Sprint Aquathlon Race, sanctioned by USA Triathlon, is set to take place in San Jose, CA. This exciting event features a series of youth aquathlon races for various age groups,..
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 triathl..
July 2025
The Great American Triathlon, held annually in Rancho Cordova, California, is a unique and challenging event set along the scenic American River Parkway. Now in its 5th year, the triathlon features a..
August 2025
The Cupertino Splash and Dash is an exciting aquathon event featuring a 1.5 km swim followed by a 5 km run, set in the scenic Stevens Creek Reservoir and surrounding park trails. This community-focuse..
Tri Santa Cruz is a vibrant and scenic triathlon event held in Santa Cruz, California, featuring a variety of races including sprint and international (Olympic) distances, aquabike, duathlon, and aqua..
The Millerton Madness Triathlon, scheduled for August 24, 2025, in Friant, California, features a variety of events including a Super Sprint Triathlon, a 5k run, and a Relay Madness option. This USAT-..
The Mount Shasta Tinman Triathlon, held annually near Mount Shasta, California, is a popular sprint triathlon featuring a 740-yard swim, 16-mile bike ride, and 3.2-mile run. The swim starts at Lake Si..
September 2025
The Shaver Lake Mile High Triathlon is a premier multisport event taking place in Shaver Lake, California. Scheduled for September 14, 2025, it features a variety of competitions including Sprint and..
October 2025
The Mermaid Triathlon & Duathlon Capitola, held at Capitola Beach, California, is California's longest-running women's triathlon, celebrating its 21st year in 2025. The event features Sprint and Super..
The Lake Evans Triathlon, 5k & 10k is a multi-sport event taking place at the Buena Vista Aquatic Recreation Area in Bakersfield, California. Scheduled for October 12, 2025, it features a variety of r..
The 2025 Cal Tri LA is a multi-sport event scheduled for October 19, 2025, at Dockweiler State Beach in Playa Del Rey, California. This event features a variety of competitions, including Sprint and O..
The Lake Hodges Off-Road Duathlon is an exciting athletic event that combines running and biking, taking place at the scenic Piedras Pintadas Trailhead in San Diego, California. Participants can compe..
November 2025
The 2025 Optimism Cal Tri Newport Dunes is set to take place at the Newport Dunes Waterfront Resort & Marina, marking the longest-running triathlon at the same location since its inception in 1978. Th..
The Fall Classic Olympic Triathlon is an exciting athletic event scheduled for November 8, 2025, in Long Beach, California. Participants will compete in a challenging course that includes a 1.5 km swi..
December 2025
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