California
California Triathlon Calendar 2025-2026
Explore the best triathlons in California for 2025-2026! Our updated list features 31 exciting races across the region. Find your next race in California below and join the running community at these great events!
October 2025
The Lake Evans Triathlon, 5k & 10k is a multi-sport event taking place at the Buena Vista Aquatic Recreation Area in Bakersfield, California. Scheduled for October 12, 2025, it features a variety of r..
The 2025 Cal Tri LA is a multi-sport event scheduled for October 19, 2025, at Dockweiler State Beach in Playa Del Rey, California. This event features a variety of competitions, including Sprint and O..
The Kaiser Permanente IRONMAN California is a premier triathlon event held in Sacramento, featuring a fast and flat course ideal for athletes aiming for personal bests. Participants enjoy a downriver..
The Lake Hodges Off-Road Duathlon is an exciting athletic event that combines running and biking, taking place at the scenic Piedras Pintadas Trailhead in San Diego, California. Participants can compe..
November 2025
The 2025 Optimism Cal Tri Newport Dunes is set to take place at the Newport Dunes Waterfront Resort & Marina, marking the longest-running triathlon at the same location since its inception in 1978. Th..
The Fall Classic Olympic Triathlon is an exciting athletic event scheduled for November 8, 2025, in Long Beach, California. Participants will compete in a challenging course that includes a 1.5 km swi..
December 2025
The IRONMAN 70.3 Indian Wells - La Quinta is a premier endurance event held in La Quinta, California, near Palm Springs. Athletes can enjoy a scenic race featuring a swim in Lake Cahuilla, a flat and..
The 39th Annual Tinsel Triathlon is a celebrated endurance event taking place in Hemet, California. This reverse sprint pool triathlon is one of the oldest and largest of its kind on the West Coast, c..
Rudolph's Aquabike is an exciting end-of-season Super Sprint event taking place in Visalia, California. Participants can choose between an individual Aquabike or an Aquabike Relay, featuring a 400-yar..
March 2026
The Pasadena Triathlon & Angel 5k is set to take place at the iconic Rose Bowl Stadium in Pasadena, California, on March 7, 2026. Celebrating its 20th year, this family-friendly event features a varie..
The IRONMAN 70.3 Oceanside is a premier triathlon event held in Oceanside, California, marking the season opener for many athletes. The race features a scenic swim in the Pacific Ocean harbor, a fast..
