Triathlon Calendar near Mission Viejo 2026-2027

Join the UWS Race on the Base on Feb 28, 2026 at the Joint Forces Training Base in Los Alamitos for a standout reverse sprint triathlon with run, bike, swim order and a separate 5K run walk. Relay teams of three welcome.

Challenge yourself at the 2026 Cal Tri Lake Perris on April 12, 2026 with Sprint, Olympic and Youth Sprint multisport and run options for all levels. Enjoy a scenic lakeside course with camping and family friendly vibes.

Dive into the Orange County Multi Sport Festival in Mission Viejo for lake swims, scenic bike and run courses, and events from kids triathlon to Olympic distance. Finish strong with a souvenir shirt, medal, and post race refreshments.

Enjoy the San Clemente Ocean Festival on the beach with athletic contests like a 5K run, 1 mile swim and Dory boat races, plus family favorites including a free concert, sand sculpting and youth activities. Perfect for athletes and families seeking s..

Join the historic Cal Tri National Championship at Newport Dunes, the longest running triathlon at one venue since 1978. Choose sprint to Olympic distances and enjoy a scenic waterfront course with welcoming race day energy.