Triathlon Calendar United States 2025-2026

Aug

31

Sunday

Mount Shasta Tinman Triathlon

Mount Shasta, California

Triathlon

The Mount Shasta Tinman Triathlon, held near Mount Shasta, California, is a popular sprint triathlon featuring a 740-yard swim, 16-mile bike ride, and 3.2-mile run. The event takes place at Lake Siski..

Sep

1

Monday

Blackland Triathlon

Plano, Texas

Triathlon

The Blackland Triathlon and Blackland Youth Tri is a family-friendly event held annually in Plano, Texas, on Labor Day. The 2025 edition features a variety of races, including a Sprint Triathlon, Duat..

Sep

5

Friday

Brineman Triathlon

Syracuse, Utah

Triathlon

The Brineman Triathlon, held annually in Syracuse, Utah, is a popular event attracting triathletes from across the region. Now in its 10th year, the race features a spectator-friendly swim at Stillwat..

Sep

6

Saturday

Pumpkinman Triathlon Festival

South Berwick, Maine

Triathlon

The Pumpkinman Triathlon Festival, celebrating its 19th anniversary, takes place in scenic Southern Maine. Scheduled for September 6, 2025, the event features a variety of triathlon options, including..

Sep

6

Saturday

Square Lake 70.3

Stillwater, Minnesota

Triathlon

Square Lake 70.3 is a mid-distance triathlon held at the scenic Square Lake Park in Stillwater, Minnesota, known for its pristine lake waters and picturesque horse country landscape. The event feature..

Sep

6

Saturday

DQ Pine Barrens Olympic Triathlon

Shamong Township, New Jersey

Triathlon

The DQ Pine Barrens Olympic Triathlon is a multi-sport event taking place in Shamong, NJ, featuring various race formats including an Olympic Triathlon, Duathlon, Aquabike, Sprint Triathlon, and a new..

Sep

6

Saturday

Lake Hopatcong Sprint Triathlon Challenge

Hopatcong, New Jersey

Triathlon

The Lake Hopatcong Sprint Triathlon Challenge, presented by Saint Clare's Health, is an exciting multi-sport event taking place at Crescent Cove Beach in Hopatcong, NJ. Participants can choose from th..

Sep

6

Saturday

Tugaloo Olympic

Lavonia, Georgia

Triathlon

The Tugaloo Olympic, Sprint and Aquabike event is set to take place at Tugaloo State Park in Lavonia, Georgia. This multi-sport competition features various race formats, including the Olympic distanc..

Sep

6

Saturday

Brett Robinson Alabama Coastal Triathlon

Gulf Shores, Alabama

Triathlon

The Brett Robinson Alabama Coastal Triathlon is a premier triathlon event set against the stunning backdrop of Gulf Shores, Alabama. Scheduled for September 6, 2025, the event features a variety of co..

Sep

6-7

Sa - Su

White Lake Fall International

White Lake charter Township, Michigan

Triathlon

The White Lake Fall International & Double Sprint is a multi-sport event taking place in White Lake, North Carolina, on September 6-7, 2025. The event features various competitions, including the Inte..

Sep

6

Saturday

Lake Stevens Triathlon

Lake Stevens, Washington

Triathlon

The Lake Stevens Triathlon + Duathlon & Aquabike is a multi-sport event taking place in Lake Stevens, Washington. Participants can choose between Sprint and Olympic distances, featuring a deep water s..

Sep

6

Saturday

Black Hawk YMCA Triathlon

Waterloo, Iowa

Triathlon

The Black Hawk YMCA Triathlon is a sprint triathlon event taking place at George Wyth State Park in Waterloo, Iowa. Participants will compete in a 500-meter swim, a 16-mile bike ride, and a 5K run. Th..

Sep

6

Saturday

Town of Hempstead Triathlon

Point Lookout, New York

Triathlon

The Town of Hempstead Triathlon, held at Town Park in Point Lookout, Lido Beach, NY, is a competitive event featuring a 1/2-mile ocean swim, a 10-mile bike ride, and a 3-mile run. Scheduled for Septem..

Sep

6

Saturday

SheSprints - Women's Triathlon

Aurora, Colorado

Triathlon

SheSprints is Colorado’s premier women-only triathlon and duathlon event held at Cherry Creek State Park in Aurora, CO. Celebrating strength, health, and sisterhood, it offers multiple race options in..

Sep

6

Saturday

Snapping Turtle Adventure Triathlon

Iola, Wisconsin

Multisport

The Snapping Turtle Adventure Triathlon takes place in Iola, Wisconsin, featuring a unique combination of a 2-mile trail run at the Iola Winter Sports Club, a 7-mile gravel/hybrid bike ride to Iola Mi..

Sep

7

Sunday

CajunMan Triathlon

Lafayette, Louisiana

Triathlon

The CajunMan Triathlon, Duathlon, Aquabike, Aquathon, and 5K Run is a premier endurance event held in Lafayette, Louisiana. This multi-sport competition features a variety of races, including individu..

Sep

7

Sunday

Square Lake Sprint

Stillwater, Minnesota

Triathlon

The Square Lake Sprint Triathlon, held at Square Lake Park in Stillwater, Minnesota, is the final race in a weekend-long series and part of a three-race Sprint Triathlon Series. This event features a..

Sep

6

Saturday

Ironman Wisconsin

Madison, Wisconsin

Triathlon

IRONMAN 70.3 Wisconsin is a scenic triathlon event held in Madison, Wisconsin. The race features a 1.2-mile swim in Lake Monona, followed by a challenging bike course through rolling hills, and conclu..

Sep

7

Sunday

Ironman 70.3 Santa Cruz

Santa Cruz, California

Triathlon

IRONMAN 70.3 Santa Cruz is a scenic triathlon event held in Santa Cruz, California, known for its laid-back, surf city atmosphere. The race features a 1.2-mile swim in the Pacific Ocean around the ico..

Sep

7

Sunday

Mighty Hamptons Steve Tarpinian Memorial Olympic Distance Triathlon

Sag Harbor, New York

Triathlon

The Mighty Hamptons Steve Tarpinian Memorial Olympic Distance Triathlon, presented by Northwell Health and benefitting i-tri, is a prestigious triathlon event held in Sag Harbor, NY. Scheduled for Sep..