XTERRA WETSUITS Mission Bay Triathlon & 5K
38th Annual · Sunday, October 11, 2026
Mission Bay & Fiesta Island, San Diego
Beginners welcome. No qualification needed to enter.
International · Sprint · Mini · Kids · Relay · Duathlon · Aquabike · Aquathlon · 5K
The 2026 Mission Bay Triathlon USAT State Championships. The Best San Diego Triathlon
Find your race at Mission Bay
First triathlon or returning for more? Choose a Sprint, Mini Sprint, relay, kids race, or 5K alongside our International distance events.
Swim buddies are available. Race for the experience, the event shirt, finisher medal, and finish-line celebration.
Your 2026 Mission Bay Triathlon technical race shirt — included with your registration.
2026 USAT State Championship
Mission Bay welcomes beginners and experienced athletes alike. No qualification is needed to enter.
Race for state champion titles, championship jerseys, and age-group or high-school qualification opportunities.
We’re thrilled that our official wetsuit sponsor, XTERRA WETSUITS, continues to support all KOZ EVENTS triathlon races. They’ve been a sponsor for over 15 years and have been equipping our athletes with the finest triathlon gear available. If you haven’t already, visit their website to explore their latest high-performance wetsuits—designed for comfort, speed, and buoyancy—all at an affordable price. The owners of XTERRA WETSUITS are both local to San Diego where they also race at many of the KOZ events. For KOZ discount use code during checkout: R-KOZ
International Triathlon (16 yrs & older): 1000m swim - 34k bike - 9k run
Sprint Triathlon: 500m swim - 17k bike - 5k run
Sprint Duathlon Run/Bike/Run: 1 mile run - 17k bike - 5k run
Sprint Aquabike Swim/Bike: 500m swim - 17k bike
Sprint Aquathlon Swim/Run: 500 Meter Swim & 5K Run
Mini Sprint Triathlon Swim/Bike/Run (11 yrs & older): 200m swim - 4 mile bike - 1.5 mile run
Itsy Bitsy Triathlon (7-10 yrs old): 100m swim - 2 mile bike - .75 mile run *
5K Run
Koz Events produces this event for the benefit of
Life Sports Foundation
Our Mission is the enhancement of Life "through" Sports.
Life Sports Foundation is dedicated to helping people, including children, of all abilities who are facing physical, situational, or medical barriers to enriching their lives through sports.
Learn How to do a Triathlon, Duathlon or Aquabike on our SD Triathlon Series Website
FREE Triathlon Training Clinics - Get Prepared and have fun!
Silver Strand Half Marathon
Get ready to embark on a journey through San Diego's most iconic races! The San Diego Half Marathon, a breathtaking coastal run of Silver Strand Half Marathon, are your first steps towards an incredible racing experience. But if you're ready to take your athletic journey to the next level, we invite you to join us at the Mission Bay Triathlon. It's an event that seamlessly combines the thrill of swimming, cycling, and running, all set against the backdrop of the stunning Mission Bay. Take in the vibrant atmosphere of San Diego's racing community by starting with the San Diego Half Marathon of Silver Strand Half Marathon, and then transition into the exhilarating world of triathlons at the Mission Bay Triathlon. Your adventure awaits!
Triple Crown of Triathlon
The Triple Crown Of Triathlon - Earn the 3 medals in ANY category (TRI, DU, Aqua, Youth, Relay) at the 3 events. They all fit together to form Triathlon Art.
