Triathlon Race Calendar in California, United States

Sep

12

Shaver Lake Mile High Triathlon

Shaver Lake, California, United States

$65.00 - $1,000.00

Triathlon Aquabike Swimrun Duathlon Running

23.7K 48.4K 18.7K 5.3K +17

Oct

11

2026 XTERRA WETSUITS Mission Bay Triathlon & San Diego 5K

San Diego, California, United States

Duathlon Running

19K 5K

Oct

11

Andie's Aggieathlon (UC Davis Triathlon Club)

Davis, California, United States

Triathlon

Classic Sprint (Collegiate) Classic Sprint (Age Group) Classic Sprint Relay (Individual Registration) Mixed Team Relay (Individual Registration)

Oct

02

Sgrail Marin - Triathlon & Trail Half Marathon

San Rafael, California, United States

Triathlon Running Trail running

Kids "Fun" Event Ultra Half-Marathon +1

Sep

27

Silicon Valley Mini Kids Triathlon

San Jose, California, United States

Triathlon

4.8K

Sep

27

T2 Triathlon Anniversary Triathlon

Long Beach, California, United States

Triathlon

24.1K

Sep

27

Santa Cruz Triathlon

Santa Cruz, California, United States

Triathlon Aquabike Swimrun

49.9K 24.1K 40.2K 6.4K +2

Sep

27

Tri to Inspire

Santa Rosa, California, United States

Triathlon

19.8K 6.6K +4

Sep

20

Albany Community Triathlon 2026

Albany, California, United States

Triathlon

12.9K 3.2K 16.1K +4

Sep

13

Pacific Coast Triathlon

Laguna Beach, California, United States

Running

5K

Sep

12

2026 San Diego Tri Classic & San Diego 5K

San Diego, California, United States

Running

5K

Aug

29

Santa Barbara Triathlon & Beach Festival

Santa Barbara, California, United States

Running Swimming

5K 1.6K Ultra