Triathlon Race Calendar in California, United States

2026 Cal Tri Castaic Lake - 6.20.26

Castaic, California, United States

20 Jun, 2026 (Sat)

Free - $53.86

Triathlon, Running

5K 10K

Huntington Lake Triathlon, 5k & 10k

Lakeshore, California, United States

20 Jun, 2026 (Sat)

$50.00 - $240.00

Triathlon, Duathlon, Aquabike, Swimrun, Running

22.9K 48K 27.5K 17.5K +8

Crescent City Triathlon

Crescent City, California, United States

26 Jul, 2026 (Sun)

$25.00 - $65.00

Triathlon, Duathlon

5K 1.6K +1

2026 Solana Beach Triathlon & Duathlon and Solana Beach 5K

Solana Beach, California, United States

26 Jul, 2026 (Sun)

$40.00 - $240.00

Triathlon, Duathlon, Aquabike, Running

5K 6.4K +2

Goleta Beach Triathlon

Goleta, California, United States

26 Jul, 2026 (Sun)

$50.00 - $120.00

Triathlon, Aquabike

14.5K 6.4K 9.7K

Courage Triathlon 2026

Lake Almanor, California, United States

15 Aug, 2026 (Sat)

$90.00

Triathlon

19.8K

Sandman Tri

Aptos, California, United States

23 Aug, 2026 (Sun)

$90.00 - $190.00

Triathlon, Duathlon

38.6K 32.2K

Millerton Madness Triathlon

Friant, California, United States

23 Aug, 2026 (Sun)

$60.00 - $165.00

Triathlon, Running

17.4K 5K +1

Pacific Coast Triathlon

Laguna Beach, California, United States

13 Sep, 2026 (Sun)

$50.00

Running

5K

Shaver Lake Mile High Triathlon

Shaver Lake, California, United States

13 Sep, 2026 (Sun)

$55.00 - $340.00

Triathlon, Aquabike, Swimrun, Duathlon, Running

23.7K 48.4K 18.7K 5.3K +12

Albany Community Triathlon 2026

Albany, California, United States

20 Sep, 2026 (Sun)

$35.00 - $130.00

Triathlon

12.9K 3.2K 16.1K +4

Santa Cruz Triathlon

Santa Cruz, California, United States

27 Sep, 2026 (Sun)

$110.00 - $215.00

Triathlon, Aquabike, Swimrun

49.9K 24.1K 40.2K 6.4K +2