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 64 exciting races across the region. Find your next race in California below and join the running community at these great events!
April 2027
Multi-discipline event at Lake Woollomes near Delano CA with sprint and Olympic triathlons, duathlon, aquathlon, aquabike, 5K/10K runs and virtual options.
May 2027
A multi-event triathlon weekend at Harbor Cove Beach, Ventura offering 12 Sprint and Olympic race options, swims, bike and run formats, and noted water and air temperatures.
A multi-discipline triathlon festival at Mission Bay San Diego on May 2, 2027 offering sprint and international distances, relays, kids races, and a 5K.
Olympic-distance triathlon at Granite Beach featuring a lake swim, 40K bike and 10K run, USAT sanctioned and limited to 300 athletes.
Sprint and Super Sprint triathlons at Folsom Lake with lake swim, road bike on closed park roads, and a trail run plus race perks and age group awards.
Monthly updates for California
Get new running races (and updates) in your inbox every month.
Weekly multi-discipline races at Leadbetter Beach Park in Santa Barbara from May 19 to August 25, 2027, featuring a 5 km run, multiple swim distances, and kids races.
IRONMAN 70.3 Northern California in Redding on May 23, 2027 pairs a Whiskeytown Lake swim with a rolling bike through Shasta County and a flat Sacramento River Trail run.
June 2027
Multi-discipline triathlon near Bass Lake and Yosemite on June 5, 2027, offering Olympic, sprint, AquaBike and duathlon options.
Tri for Real at Rancho Seco Park on June 5, 2027 features an Olympic distance triathlon, an aquabike and a super sprint with USA Triathlon sanctioning for the Olympic race and aquabike.
Coolest Ride and Tie in Cools CA on June 5, 2027 features Ride and Tie and Equathon formats and follows Ride and Tie Association standards.
San Francisco triathlon with a 1.5 mile swim from Alcatraz, an 18 mile bike and an 8 mile run; pro and amateur races with a 2027 random drawing entry.
Sprint triathlon and duathlon at Rancho Seco Park in Herald CA, part of a three-race summer series with finisher medals, race shirts, and age group awards.
Vi Tri at El Diamante High School in Visalia offers a USAT sanctioned Super Sprint triathlon plus relay, virtual and a 5k run with shirt, finisher medal and post race meal.
A multi event day at Castaic Lake on June 19, 2027 offering 12 options from sprint swims and 5K runs to Olympic distance triathlons.
A two day Sonoma County race weekend with swim, bike and run options starting at Johnson's Beach and finishes through La Crema vineyards.
45th Annual San Diego International Triathlon on June 27, 2027 in downtown San Diego, offering swim-bike-run events, relays, aquabike, duathlon and a 5.6K run; beer garden benefits Father Joe's Villages.
July 2027
Tri for Real at Rancho Seco Park offers 1.5K swim 40K bike 10K run plus aquabike and super sprint options with USAT sanctioning for the main races.
A sprint triathlon and a duathlon at Rancho Seco Park on July 11, 2027 with age-group awards, finisher medals, post-race refreshments, and on-site camping.
A 7th annual multi-leg triathlon on the American River Parkway featuring a 5.8 mile run, 12.5 mile bike and 6.1 mile paddle with individual and team divisions.
Swim run at Folsom Lake with short and long courses that start and end with swims, individual and two person team options, included gear and a post race BBQ.