Upcoming Triathlons in California
Cal Tri Lake Perris - 4.5.26
Perris, CA
April 5, 2026
OlympicSprintDuathlonAquabikeAquathlonYouth
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The ICE Breaker Triathlon
Granite Bay, CA
April 11, 2026
SprintSuper SprintDuathlonAquabike
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Alpha Win Triathlon Series - Napa Valley
Napa Valley, CA
April 11, 2026
Half IronOlympicSprint
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Millerton Lake Crows Nest Triathlon, 5k & 10k
Friant, CA
April 12, 2026
OlympicSprintAquabike
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Orange County Multi-Sport Festival
Mission Viejo, CA
April 26, 2026
OlympicDuathlonAquabikeSprint
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Spring Sprint Triathlon and SD Tri Series 5K
San Diego, CA
May 3, 2026
OlympicSprintDuathlonAquabikeAquathlonYouth
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Folsom Lake International Triathlon
Granite Bay, CA
May 9, 2026
OlympicSuper SprintAquabike
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Folsom Lake Sprint & Super Sprint Triathlon
Granite Bay, CA
May 10, 2026
SprintSuper Sprint
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Huntington Lake Triathlon, 5k & 10k
Lakeshore, CA
June 20, 2026
OlympicSprintDuathlonAquabikeAquathlon
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Cal Tri Castaic Lake - 6.20.26
Castaic, CA
June 20, 2026
OlympicSprintAquabikeAquathlonDuathlonYouth
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Wolfpack Super Sprint Aquathlon Race Sanctioned by USA Triathlon
San Jose, CA
June 27, 2026
Youth
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Cal Tri La Crema - 6.28.26
Guerneville, CA
June 28, 2026
OlympicSprintDuathlonAquathlonAquabike
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Solana Beach Triathlon & Duathlon and Solana Beach 5K
Solana Beach, CA
July 26, 2026
SprintDuathlonAquabikeAquathlon
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CVC San Diego Triathlon and San Diego Tri Series 5K
Chula Vista, CA
August 16, 2026
OlympicSprintYouthDuathlonAquabike
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XTERRA WETSUITS Mission Bay Triathlon & San Diego 5K
San Diego, CA
October 11, 2026
OlympicSprintDuathlonAquabikeYouthAquathlon
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Alpha Win Napa Valley Fall
Napa, CA
October 24, 2026
Half IronOlympicSprintSuper SprintDuathlonYouthAquabike
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Optimism Cal Tri Newport Dunes - 11.1.26
Newport Beach, CA
November 1, 2026
OlympicSprintDuathlonAquabikeAquathlonYouth
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Finding the Right California Triathlon
Whether you are looking for a beginnger-friendly Sprint in California or a challenging 70.3, Lets Race provides the most up-to-date calendar for triathletes. Our California list is updated daily to include Ironman, Olympic, and local club races.