United States
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Alabama11
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Alaska8
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Arizona11
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Arkansas4
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California46
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Colorado10
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Connecticut4
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Delaware4
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District of Columbia
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Florida55
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Georgia13
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Hawaii1
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Idaho14
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Illinois25
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Indiana27
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Iowa9
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Kansas5
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Kentucky9
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Louisiana4
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Maine7
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Maryland18
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Massachusetts18
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Michigan29
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Minnesota20
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Mississippi4
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Missouri14
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Montana7
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Nebraska5
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Nevada
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New Hampshire1
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New Jersey28
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New Mexico3
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New York64
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North Carolina30
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North Dakota1
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Ohio16
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Oklahoma8
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Oregon12
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Pennsylvania21
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Puerto Rico1
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Rhode Island2
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South Carolina13
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South Dakota
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Tennessee23
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Texas51
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Utah15
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Vermont
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Virginia37
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Washington17
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West Virginia7
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Wisconsin26
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Wyoming3
Triathlon Calendar United States 2026-2027
Monthly updates for United States
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in the United States for 2026-2027! Our updated list features 757 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
September 2026
Join the Diamond Mountain Triathlon at scenic Lake Welch for a sprint course with a 0.5 mile swim, 15 mile bike and 2 mile run, plus duathlon and junior options and day of registration. Awards, finisher medals and photos await.
Race the Marsh Creek Sprint Triathlon at Marsh Creek State Park in Downingtown on September 20, 2026. A 750 m swim, 20 km bike and 5 km run with time trial swim starts, scenic lake and forest roads, and post race awards.
Join the Robious Landing Triathlon in Midlothian VA for sprint, youth and collegiate races at scenic Robious Landing Park. Proceeds support the Live Red Foundation and every finisher earns a medal.
Take on the Reston Triathlon in Reston, Virginia on Sunday, September 20, 2026, an Olympic distance race with a 1500 m open water swim, 25 mile bike and 10K run. Open to ages 15 and up with awards and relay options.
Race the DQ Long Beach Island Triathlon, Duathlon and Aquabike on Sept 20 in Long Beach NJ. Enjoy scenic bay swims and flat, fast bike and run courses with solo, relay and junior options for ages 12 and up.
Join the Carlyle Lake Triathlon at Dam West Beach on Sept 20, 2026, featuring sprint and Olympic courses plus duathlon, aquabike and relay options for every level. Celebrate your finish with a beachside festival of food, music and awards.
Join the Buzzard's Bay Sprint Triathlon and Du on Sunday September 20, 2026 at Horseneck Beach in Westport MA, with individual and team options and stunning bay and ocean views. Swim bike and run or choose an aqua bike or duathlon for a seaside finis..
Finish the season at Stony Creek Metropark with Last TRI, a multisport festival offering swim, bike and run options for every level from super sprint to Olympic and relay teams. Safe, well run courses include a closed to traffic bike route.
Race the Kiel Raider Nation Triathlon on September 20, 2026 at Kiel High School with sprint and aquabike options, a 5K and kids races for all ages. Family friendly and community focused, proceeds benefit the Kiel High School Booster Club.
One Last Tri in White Bear Lake is the final triathlon of the season on September 20, 2026, with Sprint, Olympic, Aqua Bike and relay options for all ages and abilities. Ride through rolling hill horse farms and vineyards and finish with a flat lakes..
Join the Tulsa Area Triathletes at Twin Cove Point on Birch Lake for sprint and Olympic triathlons, aquabike, relays and swim only races for teens through masters. Enjoy a scenic lake course and a friendly race day atmosphere.
Join the Dirty Mitten Gravel Triathlon in Middleville, Michigan, offering sprint and Olympic distances with triathlon, duathlon, aquabike and solo or team relays. Scenic Camp Manitoulin hosts wetsuit legal swims and a virtual entry option.
Take on the Eagle in the Sun Triathlon in El Paso with a 50 meter pool swim, mostly flat 12 mile bike on Border Highway and a 3 mile run on the Playa Drain Trail. Individual and relay entries, swag for the first 600 and a finisher medal.
Take on the Giant Acorn Triathlon Festival at Lake Anna State Park on September 26 and 27, 2026, featuring Sprint and Olympic races and Virginia state championship racing. Enjoy scenic lake swims, rolling bike routes and shaded park runs with relay a..
Pick sprint or Olympic triathlons, duathlon, aquabike or a 5K in scenic Tarpon Springs FL on Sept 26, 2026. All finishers get medals and there are age group, elite, novice, adaptive and relay categories for every level.
Take on The Knights Fury Duathlon at Mendon Ponds Park on September 26, 2026, with two race options to suit different levels. Enjoy a challenging run bike run course in scenic Stewarts Lodge and save by registering before August 31.
Heading to IRONMAN 70.3 New York Jones Beach? PLAYTRI provides onsite bike rentals, expert builds, repairs and race day support from in house tri mechanics to get you race ready.
IRONMAN 70.3 New York at Jones Beach offers a scenic half distance triathlon along the Atlantic. Enjoy a swim in Zach's Bay, a traffic free bike on Wantagh Parkway and a flat boardwalk run with World Championship spots up for grabs.
Mesa Sprint Triathlon returns September 26, 2026 at Skyline Aquatics Center in Mesa with sprint tri, duathlon and a Kids Splash N Dash, plus a track finish for all racers. Finishers receive custom medals and registrants by September 1 are guaranteed..