Triathlon Race Calendar in California, United States

Oct

11

2026 XTERRA WETSUITS Mission Bay Triathlon & San Diego 5K

San Diego, California, United States

$51.00 - $203.00

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

18

2026 Cal Tri LA - 10.18.26

Playa Del Rey, California, United States

$53.86 - $178.86

Triathlon Running Swimming

Ultra 5K 1.5K 10K +1

Oct

18

Lake Evans Triathlon, 5k & 10k

Bakersfield, California, United States

$50.00 - $240.00

Triathlon Aquabike Swimrun Duathlon Running

23.7K 48.4K 18.7K 5.3K +12

Oct

24

Bearathlon

Berkeley, California, United States

$60.00 - $105.00

Triathlon

Collegiate Draft Legal Collegiate Classic Sprint Classic Sprint Relay Mixed Team Relay +2

Nov

01

2026 Optimism Cal Tri Newport Dunes - 11.1.26

Newport Beach, California, United States

$53.86 - $178.86

Triathlon Running Swimming

Ultra 4.8K 1.5K 9.7K

Nov

01

2026 Morro Bay Triathlon

Morro Bay, California, United States

$200.00 - $290.00

Triathlon

Ultra 25.7K

Nov

07

Bayshore Sprint and 70.4

Long Beach, California, United States

$165.00

Triathlon

Ultra

Mar

13

Bayshore 70.4 and Sprint Triathlon

Long Beach, California, United States

$175.00 - $255.00

Triathlon

Ultra 26.2K 26.6K

Apr

11

Cal Tri Lake Perris - 4.11.27

Perris, California, United States

Free - $500.00

Triathlon Aquabike Swimrun Swimming Running Duathlon

Sprint Triathlon Olympic Triathlon Youth Sprint Triathlon Sprint RunBikeRun (5km run, 15km bike, 5km run) +15

Apr

18

Millerton Lake Crows Nest Triathlon, 5k & 10k

Friant, California, United States

$45.00 - $1,000.00

Triathlon Duathlon Running Aquabike Swimrun

Super Sprint Triathlon 22.2K 45.2K Sprint Triathlon Relay +15

Apr

25

Orange County Multisport Festival

Mission Viejo, California, United States

$50.00 - $265.00

Triathlon Aquabike Running

Ultra 5K