Triathlon Calendar United States 2026-2027

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Explore the best triathlons in the United States for 2026-2027! Our updated list features 566 exciting races across the country. Find your next race in the United States below and join the running community at these great events!

May 2027
Experience a scenic beach start and flat country roads at the Lake Lou Yaeger Triathlon featuring Sprint and Olympic distances in Litchfield Illinois.
Multi distance triathlon in East Meadow on May 23, 2027 featuring adult, high school and youth races with pool swims, closed roads for biking and park runs.
A scenic IRONMAN 70.3 triathlon in Redding on May 23, 2027 with a swim in Whiskeytown Lake, a net downhill bike course and a flat run on the Sacramento River Trail.
A 70.3 triathlon in State College with a reservoir swim, rolling country roads on the bike, and a revamped run around Beaver Stadium finishing just outside the stadium.
Evening duathlon at Cycle Werks in Whitehouse, Ohio, featuring run, bike, run distances and USA Triathlon sanctioning.
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An adventure race near Rib Mountain, WI on May 29 2027 with running, biking, paddling, orienteering and team challenges in 3 hour 8 hour and 18 hour formats.
Second-year sprint triathlon at Hartness in Greenville with a 750 m open water swim, 20K bike and 5K run, plus relay, aquabike and aquathlon options.
Adventure race at Rockford Lake offering two timed formats with solo and two-person team options combining biking, kayaking, running and navigation.
A multi distance triathlon in Austin with a Lady Bird Lake swim, downtown bike route, and a run to Auditorium Shores plus a post race festival.
June 2027
Experience Missouri’s premier multi-sport showdown at Creve Coeur Park with triathlon, duathlon, and aquathlon races for all athletes including a USAT State Championship.
Experience a diverse multi sport event in Princeton featuring Sprint and SuperSprint triathlons plus duathlon aquabike and 5k running options for all ages.
OnondagaMan in Jamesville NY offers long and intermediate triathlon and AquaBike options plus relay teams, stocked aid stations, a beer garden and on-site music.
Triathlon festival in Rock Hall, MD featuring Olympic and Sprint distances with Chesapeake Bay harbor swims and mostly flat bike and run courses.
Multisport events at Abington High School on June 5, 2027 include triathlon, team triathlon, duathlon, aqua bike and a 5k run. Registration opens 11/06/2026 and fees vary; proceeds benefit local Abington community organizations.
Multisport race day at Island Lake State Recreation Area in Brighton, Michigan on June 5, 2027, offering Olympic and sprint triathlons, relays, aquabike, a duathlon, and timed practice swims. Swim in Kent Lake, bike rolling tree lined roads, and run..
A circuit-style triathlon on June 5, 2027 at Esther Simplot Park in Boise featuring Super Sprint, Sprint, Olympic distances plus relay and adaptive categories. The USAT sanctioned event supports adaptive sports in southern Idaho.
Sprint triathlon at Long Pond, Wellfleet featuring a 1/4 mile swim, 10 mile bike through Cape Cod National Seashore and a 5K run, benefiting nonprofit radio WOMR.
Lakeside triathlon near Yosemite on June 5, 2027 offering Olympic and Sprint courses plus 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.
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