Triathlon Calendar United States 2025-2026

Sep

28

Sunday

MightyMan Montauk

Montauk, New York

Triathlon

MightyMan Montauk is a triathlon event taking place in Montauk, NY, featuring both Olympic and Sprint distances. Athletes can participate in various formats, including individual, relay, and AquaBike..

Sep

28

Sunday

Robious Landing Triathlon

Midlothian, Virginia

Triathlon

The Robious Landing Triathlon, taking place at Robious Landing Park in Chesterfield, VA, features a variety of events including a non-draft sprint triathlon, duathlon, youth triathlons, and the NCAA D..

Oct

4

Saturday

Mermaid Triathlon & Duathlon Capitola

Capitola, California

Triathlon

The Mermaid Triathlon & Duathlon Capitola 2025 is set to take place at Capitola Beach, California, featuring a variety of events including Sprint and Super Sprint Triathlons, Duathlons, Aquabike, and..

Oct

4

Saturday

Castle Creek Triathlon

Peoria, Illinois

Triathlon

The Castle Creek Triathlon, organized by 4 Peaks Racing, is a challenging multisport event featuring various race formats including sprint and Olympic distance triathlons, aquabike, duathlon, and kaya..

Oct

4

Saturday

Mattoon Last Chance Triathlon

Mattoon, Illinois

Triathlon

The Mattoon Last Chance Triathlon is a competitive event held in Mattoon, Illinois, featuring a 275-yard indoor pool swim, a 12-mile bike ride, and a 3.1-mile run. All segments of the triathlon start..

Oct

4

Saturday

Nat Greene's Revenge Triathlon

Greensboro, North Carolina

Triathlon

Nat Greene's Revenge Triathlon and Duathlon is a premier multisport event taking place on October 4, 2025, at Lake Brandt Marina in Greensboro, North Carolina. The event features a full day of racing,..

Oct

4

Saturday

Sandling Beach Triathlon Festival

Wake Forest, North Carolina

Triathlon

The Sandling Beach Triathlon Festival is a premier athletic event taking place at Sandling Beach State Recreation Area in Wake Forest, NC. Scheduled for October 4, 2025, the festival features a variet..

Oct

4-5

Sa - Su

Baltimore Triathlon Festival

Chase, Maryland

Triathlon

The Baltimore Triathlon Festival is set to take place on October 4-5, 2025, at Gunpowder State Park in Chase, Maryland. This exciting event features a variety of races, including women's and men's spr..

Oct

4

Saturday

Pleasants Landing Triathlon

Bumpass, Virginia

Triathlon

The Pleasants Landing Triathlon, set to take place at Pleasants Landing Marina in Bumpass, VA, features a variety of events including Olympic and Sprint triathlons, aquabikes, and relays. Participants..

Oct

4

Saturday

TRI-It Racing Clubs Du Kona Multi-sport Series

Guthrie, Oklahoma

Triathlon

The TRI-It Racing Clubs Du Kona Multi-sport Series is an exciting annual event held at Mitchell Park - Guthrie Lake in Guthrie, Oklahoma. This multi-sport series features various competitions, includi..

Oct

4

Saturday

Dam Triathlon

Lexington, South Carolina

Triathlon

The Dam Tri is a popular triathlon event taking place in Lexington, South Carolina, featuring a variety of competitions including the Sprinternational Triathlon, Sprinternational Relay, Aquabike, and..

Oct

4

Saturday

Cedar Creek Fall Duathlon

Seaford, New York

Duathlon

The Cedar Creek Fall Duathlon is an exciting multi-sport event taking place in Cedar Creek Park, Seaford, New York. Participants can choose from various categories, including Individual Adult Duathlon..

Oct

5

Sunday

Ironman 70.3 Waco

Waco, Texas

Triathlon

IRONMAN 70.3 Waco is a thrilling triathlon event set in the heart of Texas, featuring a scenic swim in the Brazos River, a fast bike course through the picturesque Texas countryside, and a memorable f..

Oct

5

Sunday

Playtri Fort Worth Triathlon

Saginaw, Texas

Triathlon

The Playtri Fort Worth Triathlon & Run-Bike-Run II is a multi-sport event scheduled for October 5, 2025, in Fort Worth, Texas. Participants can choose from various events, including the Olympic Triath..

Oct

10-11

Fr - Sa

Virginia ANVIL Ultra Triathlon

Spotsylvania Courthouse, Virginia

Triathlon

The Virginia ANVIL Ultra Triathlon is an endurance event taking place in Spotsylvania, VA, featuring various challenging races that go beyond traditional Ironman distances. Participants can choose fro..

Oct

11

Saturday

Cal Tri Charlotte

Statesville, North Carolina

Triathlon

The 2025 Cal Tri Charlotte is a multi-sport event taking place at Lake Norman State Park in Statesville, North Carolina. This event features a variety of competitions, including Sprint and Olympic tri..

Oct

11

Saturday

Du-Ruyter Duathlon

DeRuyter, New York

Duathlon

The Du-Ruyter Duathlon is an exciting multi-sport event scheduled for October 11, 2025, in DeRuyter, NY. Participants will engage in a unique format that includes a 5K run, followed by a 5K kayak on D..

Oct

11

Saturday

Atomic Man Half Iron Triathlon

Lenoir City, Tennessee

Triathlon

The Atomic Man Half Iron/Olympic/Sprint Triathlon and Sprint Duathlon is set to take place in Lenoir City, TN, featuring a variety of events including individual and relay options for the Half Iron, S..

Oct

11

Saturday

She Tris Sprint Triathlon- Winterville (NC)

Winterville, North Carolina

Triathlon

The She Tris Sprint Triathlon in Winterville, NC, is an empowering event designed exclusively for women of all skill levels, taking place on October 11, 2025. Participants can choose from various even..

Oct

12

Sunday

Wurst Tri Ever

New Braunfels, Texas

Triathlon

The Wurst Tri Ever is an annual triathlon event held at the Landa Park Aquatic Center in New Braunfels, Texas. Scheduled for October 12, 2025, this USAT-sanctioned sprint triathlon features a 300-mete..