Triathlon Race Calendar in California, United States

Oct

11

Andie's Aggieathlon (UC Davis Triathlon Club)

Davis, California, United States

$35.00 - $90.00

Triathlon

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

Oct

11

2026 XTERRA WETSUITS Mission Bay Triathlon & San Diego 5K

San Diego, California, United States

$40.00 - $173.00

Duathlon Running

19K 5K

Oct

18

Lake Evans Triathlon, 5k & 10k

Bakersfield, California, United States

$45.00 - $230.00

Triathlon Aquabike Swimrun Duathlon Running

23.7K 48.4K 18.7K 5.3K +12

Oct

18

2026 Cal Tri LA - 10.18.26

Playa Del Rey, California, United States

Free - $153.86

Triathlon Running Swimming

Ultra 5K 1.5K 10K +1

Oct

24

Bearathlon

Berkeley, California, United States

$55.00 - $95.00

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

$43.86 - $153.86

Triathlon Running Swimming

Ultra 4.8K 1.5K 9.7K

Nov

01

2026 Morro Bay Triathlon

Morro Bay, California, United States

$190.00 - $280.00

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

25

Orange County Multisport Festival

Mission Viejo, California, United States

$45.00 - $250.00

Triathlon Aquabike Running

Ultra 5K

May

02

Cal Tri Ventura - 5.2.27

Ventura, California, United States

$28.86 - $500.00

Triathlon Duathlon Aquabike Swimrun Swimming Running

Sprint Triathlon Ultra Sprint RunBikeRun (5km run, 22km bike, 5km run) Sprint SwimBike +9