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 62 exciting races across the region. Find your next race in California below and join the running community at these great events!
April 2027
A multi-sport race day at Lake Mission Viejo on April 25, 2027 featuring Olympic and sprint triathlons, duathlon, aquabike, relays, a 5K, mini and kids races with lake swims, canyon bike routes and run aid stations.
May 2027
Multi-event race day at Harbor Cove Beach in Ventura with sprint and Olympic swim, bike and run formats plus 5K and 10K options; water averages 59 F so a wetsuit is recommended.