United States
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Alabama9
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Alaska7
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Arizona10
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Arkansas2
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California38
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Colorado8
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Connecticut3
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Delaware3
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District of Columbia
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Florida46
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Georgia13
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Hawaii1
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Idaho9
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Illinois15
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Indiana22
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Iowa8
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Kansas5
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Kentucky9
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Louisiana3
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Maine7
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Maryland11
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Massachusetts17
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Michigan27
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Minnesota16
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Mississippi3
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Missouri14
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Montana3
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Nebraska3
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Nevada
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New Hampshire
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New Jersey23
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New Mexico3
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New York51
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North Carolina30
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North Dakota
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Ohio13
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Oklahoma6
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Oregon9
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Pennsylvania16
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Puerto Rico
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Rhode Island1
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South Carolina14
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South Dakota
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Tennessee22
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Texas44
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Utah14
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Vermont
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Virginia33
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Washington13
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West Virginia5
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Wisconsin24
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Wyoming2
Triathlon Calendar United States 2025-2026
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 2025-2026! Our updated list features 632 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
Race the Buzzard's Bay Sprint at Horseneck Beach in Westport, MA on Sept 20, 2026. Triathlon, duathlon, relay and aqua bike routes showcase coastal roads and a beach finish.
Join The Last TRI on Sunday September 20 2026 at Stony Creek Metropark in Shelby Township Michigan for swim, bike and run courses around a scenic lake with a closed bike course. Options include relays, aquabike, and multiple distances for all abiliti..
Dive into multisport fun at the Kiel Raider Nation Triathlon in Kiel, WI with sprint and kids races, relays, aquabike, and road and trail runs for all ages. Proceeds support the Kiel Booster Club.
Take on the Giant Acorn Triathlon Festival at Lake Anna State Park, a two day swim, bike and run event with Olympic and Sprint distances, relays and aquabike. USA Triathlon sanctioned and serving as the Virginia State Championships.
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.
Race IRONMAN 70.3 New York at scenic Jones Beach on September 26, 2026. PLAYTRI will be onsite with bike rentals, pro tune ups and race day support so you can focus on swim, ride and run.
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.
Join the Mesa Sprint Triathlon at Skyline Aquatics Center in Mesa on Sept 26, 2026 and tackle a fast swim bike run course, or opt for the duathlon, relay or kids splash and dash. Finishers get a custom medal and early registrants secure shirts.
Kerrville Triathlon Festival brings multiple distances, relay options and a kids run to Kerrville TX with races across two days. Celebrate at a riverside after party with floating on the Guadalupe, free food and beer.
Join the YMCA Wrightsville Beach Sprint Triathlon on Saturday, September 26, 2026 in Wrightsville Beach, NC. Pick individual, relay, aquabike or youth distances and enjoy a flat, scenic course perfect for racers and families.
Take on The Big Hurt in Port Angeles, a four part multisport challenge featuring mountain biking, kayaking, road cycling and a waterfront 10K run. Compete solo in Iron Division or team up while supporting the Olympic Discovery Trail.
IRONMAN Chattanooga brings a scenic full distance triathlon to Tennessee on September 27, 2026, with a downriver swim and rolling bike and run courses. Expect a memorable race day with river views and lively local support.
She Tris Sprint Triathlon in Huntersville is an empowering all women and girls event with a pool swim, 8 mile bike loop and 2 mile run plus youth races and virtual entries. Enjoy clinics, a training plan, keepsake and finish line party.
Take on land and lake at the Mudskipper US Swimrun Championships Indiana II in Borden on 27 Sep 2026. Distances range from quick 3 mile swims to the full 23.6 km challenge, so beginners and seasoned racers both find a fit.
Join Cal Tri DFW Fort Worth on September 27, 2026 in the Dallas Fort Worth area for sprint, Olympic and youth swim, bike, run events that welcome all levels. Water is about 75 F and wetsuits are allowed for a comfortable swim.
Join the DQ Treasure Island Sprint at Riverfront Park in Point Pleasant on September 27, 2026, offering swim, duathlon, aquabike and kayak triathlon options for all abilities. Scenic river courses, rolling bike loops and post race refreshments make i..
Swim the Gulf, bike a closed course and run along Florida coast at the South Seas Captiva Island Triathlon, with sprint, Super Sprint, duathlon, aquabike and team relays on a scenic resort and wildlife preserve. Limited parking means carpooling and s..
Cal Tri DFW returns Sept 27, 2026 at Ray Roberts Lake State Park with a full slate of Sprint and Olympic triathlon plus swim and run only options. Family friendly youth races are free and wetsuits are permitted for the warm lake swim.
IRONMAN 70.3 Augusta is a scenic half distance triathlon with a downriver current assisted swim in the Savannah River, a bike through rural roads and a flat, shaded run along the North Augusta Greeneway. Expect lively local support.