California
California Triathlon Calendar 2026-2027
Monthly updates for California
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in California for 2026-2027! Our updated list features 45 exciting races across the region. Find your next race in California below and join the running community at these great events!
October 2026
Cal Tri LA returns October 18, 2026 at Dockweiler State Beach for a lively seaside multisport festival with sprint and Olympic options plus SwimBikeRun, RunBikeRun, swims and runs. Youth races are free for ages 7 to 17, so bring the family.
Join Finish The Ride & Finish The Run at West Creek Park for rides, runs and a lively expo that promotes safer streets for everyone. Routes and virtual options welcome all ages with food trucks and family fun.
November 2026
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.
Take on the Fall Classic Olympic Triathlon in Long Beach with a 1.5 km swim, 40 km bike and 10 km run along scenic Bayshore. Enjoy chip timing, a finisher medal and post race food in a lively community atmosphere.
December 2026
IRONMAN 70.3 La Quinta on December 6, 2026 offers a fast, palm lined course with a lake swim, speedy bike loops and scenic mountain views on the run. Perfect for racers chasing a personal best or a slot to the 2027 World Championship.