Triathlon Calendar United States 2025-2026

Aug

3

Sunday

Badgers Autumn Lake Triathlon

Williamstown, New Jersey

Triathlon

The Badgers Autumn Lake Triathlon, held in Williamstown, New Jersey, features a variety of events including triathlon, relay triathlon, aquabike, duathlon, aquathon, and a 5K run. The triathlon begins..

Aug

3

Sunday

Humans of Steel: Harris Lake Olympic Triathlon

New Hill, North Carolina

Triathlon

The Humans of Steel: Harris Lake Sprint & Olympic Triathlon is a unique multisport event held at Harris Lake County Park in New Hill, North Carolina. Featuring a "reverse" format, participants run fir..

Aug

3

Sunday

Group Run & Raft

New River Gorge National Park & Preserve, West Virginia

Multisport

The Group Run & Raft event on August 3, 2025, offers a unique dual-sport adventure in New River Gorge National Park, West Virginia. Participants start with an approximately 11-mile trail run from Faye..

Aug

3

Sunday

Aukeman Triathlon

Auke Bay, Alaska

Triathlon

The Aukeman Triathlon, held in Auke Bay, Alaska, offers Sprint, Olympic, and Long-distance race options, including relay teams for each category. The event is based at the University of Alaska Southea..

Aug

3

Sunday

Fort Ritchie Triathlon

Highfield-Cascade, Maryland

Triathlon

The Fort Ritchie Triathlon and Duathlon, held annually at Lake Royer in Cascade, Maryland, offers a variety of race options suitable for all levels. Participants can choose from Sprint and Olympic dis..

Aug

3

Sunday

River Cities Triathlon

Benton, Louisiana

Triathlon

The River Cities Triathlon takes place at Cypress Black Bayou Park in Benton, Louisiana. This event features a sprint-distance course with an 880-yard swim in Cypress Lake, an 18.2-mile bike ride arou..

Aug

3

Sunday

Greenfield Triathlon

Greenfield, Massachusetts

Triathlon

The Greenfield Triathlon, New England's longest-running triathlon, takes place in Greenfield, Massachusetts, featuring scenic courses through Franklin County's back roads and the historic Eunice Willi..

Aug

3

Sunday

LoCo Sprint Triathlon

Ashburn, Virginia

Triathlon

The LoCo Sprint Triathlon is a dynamic sprint triathlon event held in Ashburn, Virginia, typically starting at the Broadlands Community Center. Scheduled for August 3, 2025, it features individual tri..

Aug

3

Sunday

MTC Zilla Tri

Columbia, Illinois

Triathlon

The MTC Zilla Tri is a USAT-sanctioned sprint triathlon held annually in Columbia, Illinois, at Bolm-Schuhkraft Park. Open to athletes aged 14 and older, it features an adult sprint triathlon and a ne..

Aug

3

Sunday

Summer Biathlon

Goddard, Kansas

Multisport

The Summer Biathlon, held at Lake Afton Park's Young Hunter Safety Range in Goddard, Kansas, is a unique event combining running and rifle shooting. Designed by winter biathletes for summer training,..

Aug

3

Sunday

Post Falls Triathlon

Post Falls, Idaho

Triathlon

The Post Falls Triathlon is an annual sprint event held at Q’emiln Park in Post Falls, Idaho, featuring a scenic course along the Spokane River. The triathlon includes a 0.5k swim at Q’emiln Beach, a..

Aug

3

Sunday

Tulsa Area Triathletes Chris Brown Tulsa Duathlon

Valley Park, Oklahoma

Duathlon

The Tulsa Area Triathletes Chris Brown Tulsa Duathlon 2025 takes place at Mohawk Park in Tulsa, Oklahoma. This multi-sport event features a 5km road run, a 25km road bike, and a final 5km run on fast,..

Aug

5

Tuesday

Winding Trails Sprint Triathlon

Farmington, Connecticut

Triathlon

The Winding Trails Sprint Triathlon is part of the Winding Trails Triathlon Series held in Farmington, Connecticut. This Tuesday evening event features two race distances: the Tiny Tri, which includes..

Aug

6

Wednesday

Tri Faster SwimRun

Brookfield, Wisconsin

Aquathlon

The Tri Faster SwimRun - Race #4 is held at Fox Brook Park in Brookfield, Wisconsin, featuring a variety of swim and run events. Participants can compete in an Individual Aquathon (1000m swim/5k run),..

Aug

6

Wednesday

Southern Tier Triathlon Club Summer Tri Series

Cassadaga, New York

Triathlon

The Southern Tier Triathlon Club Summer Tri Series #3 takes place in the scenic lakeside community of Cassadaga, NY, near Buffalo and Erie. This USAT-sanctioned event features a Super Sprint triathlon..

Aug

7

Thursday

Cupertino Splash and Dash

Cupertino, California

Aquathlon

The Cupertino Splash and Dash is a community-focused aquathon held in Cupertino, California, featuring a 1.5 km (1 mile) swim in Stevens Creek Reservoir followed by a 5 km (3.2 mile) run on Stevens Cr..

Aug

7

Thursday

Cedar Lake Triathlon Series

Chester, Connecticut

Triathlon

The Cedar Lake Triathlon Series in Chester, Connecticut, offers a competitive yet accessible race experience with limited participant fields. The event features Sprint and Super Sprint distances, incl..

Aug

7

Thursday

Coveathlon

Newport Beach, California

Aquathlon

The Coveathlon #4 is a multi-sport event held in Newport Beach, California, featuring a 1K swim, a 5K run, and relay options combining both. Participants can choose from individual races including the..

Aug

8-9

Fr - Sa

Columbia River Triathlon

Vancouver, Washington

Triathlon

The Columbia River Triathlon, held in Vancouver, Washington, is a vibrant summer weekend endurance sports festival set along the scenic Columbia River. The event features a variety of races including..

Aug

9

Saturday

High Point Triathlon

High Point, North Carolina

Triathlon

The High Point Triathlon is a sprint triathlon held annually at Oak Hollow Lake in High Point, North Carolina. Part of the Trivium Multisport Series, this event offers a 500-meter swim, a 13.5-mile bi..