Triathlons & Multisport Races in California
As of October 6, 2026, Crewable lists 5 upcoming triathlons and multisport races in California from October 2026 to November 2026. The next is Aggieathlon (UC Davis Triathlon Club) on October 11 in Davis. Registration is open for all 5.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
3 racesNovember 2026
2 racesQuick answers
What is the next triathlons and multisport race in California?
Aggieathlon (UC Davis Triathlon Club), on Sunday, October 11, 2026, in Davis. Distances: Relay.
How many triathlons and multisport races in California have open registration?
All 5 list registration as open as of October 6, 2026.
What is the busiest month for triathlons and multisport races in California?
October 2026, with 3 of the 5. November 2026 follows with 2.
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