Triathlon Races in California

Find upcoming triathlon races in California — with dates, locations, and direct registration links.

25 upcoming triathlon races found in California

Upcoming Triathlon Races in California

Triathlon-International+10

Aug 16

2026 CVC San Diego Triathlon and San Diego Tri Series 5K

Sun, August 16, 2026

Chula Vista, CA

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Super Sprint Triathlon+8

Aug 23

Millerton Madness Triathlon

Sun, August 23, 2026

Friant, CA

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SB 45 TRIATHLON - ADULT AGE GROUP+22

Aug 29

Santa Barbara Triathlon & Beach Festival

Sat, August 29, 2026

Santa Barbara, CA

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Non-Competitve Kids Triathlon+2

Aug 30

Menlo Park Back-to-School Kids Triathlon

Sun, August 30, 2026

Menlo Park, CA

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Barbara Schmidt Millar Women's Triathlon Celebrating Life, Empowering Women+2

Aug 30

Barbara Schmidt Millar Women's Triathlon & 5K: Celebrating Life, Empowering Women

Sun, August 30, 2026

Nevada City, CA

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Mini Triathlon

Sep 12

Silicon Valley Mini Kids Triathlon

Sat, September 12, 2026

San Jose, CA

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Triathlon-Olympic Distance+9

Sep 12

2026 San Diego Tri Classic & San Diego 5K

Sat, September 12, 2026

San Diego, CA

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Olympic Triathlon+8

Sep 13

Pacific Coast Triathlon

Sun, September 13, 2026

Laguna Beach, CA

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Sprint Triathlon+20

Sep 13

Shaver Lake Mile High Triathlon

Sun, September 13, 2026

Shaver Lake, CA

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Sprint Triathlon - Adult+7

Sep 27

Tri to Inspire

Sun, September 27, 2026

Santa Rosa, CA

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Mini Triathlon

Sep 27

Silicon Valley Mini Kids Triathlon

Sun, September 27, 2026

San Jose, CA

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Kids "Fun" Event+4

Oct 2

SGRAIL Marin - Triathlon & Trail Half Marathon

Fri, October 2, 2026

San Rafael, CA

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Triathlon-International+10

Oct 11

2026 XTERRA WETSUITS Mission Bay Triathlon & San Diego 5K

Sun, October 11, 2026

San Diego, CA

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Sprint Triathlon+18

Oct 18

2026 Cal Tri LA - 10.18.26

Sun, October 18, 2026

Playa Del Rey, CA

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Super Sprint Triathlon+21

Oct 18

Lake Evans Triathlon, 5k & 10k

Sun, October 18, 2026

Bakersfield, CA

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Sprint Triathlon+12

Nov 1

2026 Optimism Cal Tri Newport Dunes - 11.1.26

Sun, November 1, 2026

Newport Beach, CA

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Virtual Half Triathlon (70.3)+1

Nov 1

Miles For Meals Virtual Triathlon and Virtual Marathon

Sun, November 1, 2026

Sacramento, CA

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Bayshore Olympic Triathlon

Nov 7

Fall Classic Olympic Triathlon

Sat, November 7, 2026

Long Beach, CA

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5k+4

Nov 15

Kendra's Race

Sun, November 15, 2026

Goleta, CA

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Sprint Triathlon+18

Apr 11

2027 Cal Tri Lake Perris - 4.11.27

Sun, April 11, 2027

Perris, CA

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Olympic Triathlon+11

Apr 25

Orange County Multisport Festival

Sun, April 25, 2027

Mission Viejo, CA

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Sprint Triathlon+12

May 2

2027 Cal Tri Ventura - 5.2.27

Sun, May 2, 2027

Ventura, CA

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Sprint Triathlon+18

Jun 19

2027 Cal Tri Castaic Lake - 6.19.27

Sat, June 19, 2027

Castaic, CA

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Sprint Triathlon+8

Jun 26

2027 Cal Tri La Crema - 6.27.27

Sat, June 26, 2027

Guerneville, CA

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Sprint Triathlon+7

Jun 27

2027 Cal Tri La Crema - 6.27.27

Sun, June 27, 2027

Guerneville, CA

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