Triathlon Race Calendar in California, United States

Aug

29

Santa Barbara Triathlon & Beach Festival

Santa Barbara, California, United States

$55.00

Running Swimming

5K 1.6K Ultra

Aug

30

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

Nevada City, California, United States

Triathlon Running

22.5K 5K

Aug

30

Menlo Park Back-to-School Kids Triathlon

Menlo Park, California, United States

$155.00

Triathlon

Non-Competitve Kids Triathlon Competitve Kids Triathlon Super Sprint Triathlon

Sep

12

2026 San Diego Tri Classic & San Diego 5K

San Diego, California, United States

$43.00

Running

5K

Sep

13

Shaver Lake Mile High Triathlon

Shaver Lake, California, United States

$55.00 - $350.00

Triathlon Aquabike Swimrun Duathlon Running

23.7K 48.4K 18.7K 5.3K +12

Sep

13

Pacific Coast Triathlon

Laguna Beach, California, United States

$55.00

Running

5K

Sep

20

Albany Community Triathlon 2026

Albany, California, United States

$45.00 - $150.00

Triathlon

12.9K 3.2K 16.1K +4

Sep

27

Silicon Valley Mini Kids Triathlon

San Jose, California, United States

$75.00

Triathlon

4.8K

Sep

27

Santa Cruz Triathlon

Santa Cruz, California, United States

$125.00 - $230.00

Triathlon Aquabike Swimrun

49.9K 24.1K 40.2K 6.4K +2

Sep

27

Tri to Inspire

Santa Rosa, California, United States

$45.00 - $170.00

Triathlon

19.8K 6.6K +4

Sep

27

T2 Triathlon Anniversary Triathlon

Long Beach, California, United States

Free

Triathlon

24.1K

Oct

02

Sgrail Marin - Triathlon & Trail Half Marathon

San Rafael, California, United States

Free - $390.00

Triathlon Running Trail running

Kids "Fun" Event Ultra Half-Marathon +1