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 68 exciting races across the region. Find your next race in California below and join the running community at these great events!
August 2026
Experience a coastal multisport event in California featuring a quarter mile ocean swim, a 10 mile bike ride, and a 3 mile run along the scenic Hermosa Beach shoreline.
Tri Santa Cruz in Santa Cruz, CA on August 9, 2026 offers sprint and international triathlon distances plus swims, duathlon, aquabike, aquathlon, relays and a 5k run. The event features a sheltered swim and a closed bike course along the coastline.
Experience a classic California multisport event at Rancho Seco Park featuring a lake swim, road bike, and trail run. Choose between triathlon and duathlon formats for individuals or relay teams in this long running summer series.
Courage Triathlon
The Courage Triathlon takes place on Saturday, August 15, 2026. It is the event's 11th annual edition. The venue is the Lake Almanor Country Club at 951 Clifford Dr. in Westwood, California.
The event supports the organization Coura..
Experience a scenic multisport event at the San Diego Bayfront featuring flat and fast courses. Choose from triathlon, duathlon, or 5K options with a centralized transition area and a post race celebration at the water's edge.
Experience an inaugural triathlon in Redding featuring a Whiskeytown Lake swim, a net downhill bike course, and a flat run along the Sacramento River Trail. This scenic event serves as a 2027 World Championship qualifier.
Experience a beautiful sprint triathlon at Folsom Lake featuring a lake swim and scenic trail run. Join individual or relay categories in this long running regional championship held on traffic free park roads.
The Millerton Madness Triathlon features a USAT-sanctioned Super Sprint course at Millerton Lake. The event also includes a standalone 5k run and a team relay option. All participants receive a medal, shirt, and post-race meal.
Experience one of Santa Cruz County's oldest triathlons at Seacliff State Beach. This USAT sanctioned event features a unique swim around a historic cement ship and supports local lifeguard and youth water safety programs.
Join the Santa Barbara Triathlon & Beach Festival on August 29, 2026, for a day of coastal athletic challenges. Choose from triathlons, duathlons, aquabikes, a 5K run, or a 1-mile swim, with options for teams and all ages. Finish with music and refre..
September 2026
Race a scenic sprint tri at Lake Siskiyou in Mount Shasta on Labor Day weekend, with a short swim, 16 mile bike and 3.2 mile run. Open to individuals, relays and duathletes, the event supports Dunsmuir Rotary and local kids.
Experience a scenic triathlon in the Sierra mountains featuring a lake swim, a three loop bike course, and a rolling road run. This California event includes a post race lunch and awards for various age groups.
Event Overview
The San Diego Tri Classic & San Diego 5K is a multisport event taking place at Liberty Station in San Diego. The event features several race formats including triathlon, aquabike, duathlon, and aquathlon, as well as a standalone 5K..
Experience an off road multi sport adventure at Folsom Lake featuring a lake swim, draft legal gravel biking, and scenic trail running. Choose between Sprint and Olympic distances or the unique SUP/Kayak triathlon category.
Experience the California coast at IRONMAN 70.3 Santa Cruz. This event features an ocean swim around the historic wharf, a scenic bike ride on Highway 1, and a flat run finishing on the sandy beach.
Join this community super sprint triathlon in Albany California featuring pool swimming and lap based cycling and running. Open to individuals and relay teams this volunteer run event supports local middle and high school sports.
The Apple Valley Reverse Triathlon flips the traditional format, starting with a run and finishing with a swim at Civic Center Park. It offers a reverse triathlon, a kids event, and a standalone 5K run. All participants are chip-timed, with awards an..
Event Overview
Tri to Inspire is a triathlon event in Santa Rosa. It was formerly known as the DJFE Triathlon Race Series. It takes place at the Finley Aquatic Center at 2060 W. College Avenue.
Event Details
The event offers two distance options:
Mi..
October 2026
The XTERRA WETSUITS Mission Bay Triathlon in San Diego is event 3 of the San Diego Triathlon Series and host of the 2026 USA Triathlon State Championships, offering Olympic and sprint triathlons, multisport races, youth events, and a Mission Bay 5K.
Experience a fast and flat triathlon in Sacramento featuring a unique downriver swim and a scenic bike ride through wine country. Finish your journey with an iconic celebration at the California State Capitol.