Simi Valley
Triathlon Calendar near Simi Valley 2026-2027
Monthly updates for Simi Valley
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Simi Valley for 2026-2027! We've gathered 3 exciting races in the area. Check out our detailed list below to find your next local race.
October 2026
Cal Tri LA at Dockweiler State Beach in Playa Del Rey offers 18 event options on October 18, 2026, across Olympic, Sprint, and Youth Sprint formats, including triathlon, duathlon, aqua bike, swim run, and standalone swim and run distances.
May 2027
A multi event triathlon day at Harbor Cove Beach in Ventura offering twelve race options from 400 yard swims and 5K runs to Olympic distance swim bike run formats. Water averages about 59 F and entries are open to ages 18 and up.
June 2027
Eighteen multisport event options at Castaic Lake including sprint, Olympic and youth triathlon formats alongside standalone swim and run races.