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California Triathlon Calendar 2025-2026

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Explore the best triathlons in California for 2025-2026! Our updated list features 21 exciting races across the region. Find your next race in California below and join the running community at these great events!

November 2025
Nov
16
Sunday

Kendra's Race

Triathlon
December 2025
Dec
7
Sunday

Ironman 70.3 La Quinta

Triathlon
Dec
14
Sunday

Tinsel Triathlon

Triathlon
February 2026
Feb
28
Saturday

UWS Race on the Base

Triathlon
March 2026
Mar
7
Saturday

Pasadena Triathlon

Triathlon
Mar
7
Saturday

Bayshore 70.4 Triathlon

Triathlon
Mar
14
Saturday

The Rocky Hill Triathlon

Triathlon
Mar
28
Saturday

Ironman 70.3 Oceanside

Triathlon
April 2026
Apr
12
Sunday

Cal Tri Lake Perris

Triathlon
May 2026
May
3
Sunday

Cal Tri Ventura

Triathlon
June 2026
Jun
20
Saturday

Cal Tri Castaic Lake

Triathlon
Jun
27
Saturday

XTERRA Tahoe City

Triathlon
Jun
28
Sunday

Cal Tri La Crema

Triathlon
July 2026
Jul
18-19
Sa - Su

San Clemente Ocean Festival

Multisport
Jul
18
Saturday

Great American Triathlon

Triathlon
Jul
26
Sunday

Crescent City Triathlon

Triathlon
August 2026
Aug
9
Sunday

Hermosa Beach Triathlon

Triathlon
Aug
29
Saturday

Santa Barbara Triathlon & Beach Festival

Triathlon
September 2026
Sep
6
Sunday

Mount Shasta Tinman Triathlon

Triathlon
October 2026
Oct
18
Sunday

Ironman California

Triathlon
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