Triathlon Calendar United States 2025-2026

Aug

30

Sunday

Lakes Country Triathlon

Baxter, Minnesota

Triathlon

Sep

5

Saturday

CassadagaMan Triathlon

Cassadaga, New York

Triathlon

Sep

5

Saturday

Tugaloo Olympic

Lavonia, Georgia

Triathlon

Sep

6

Sunday

Mount Shasta Tinman Triathlon

Mount Shasta, California

Triathlon

Take on the Mount Shasta Tinman Triathlon at beautiful Lake Siskiyou with a 740 yard swim, 16 mile bike and 3.2 mile run. Enjoy stunning mountain views, team and individual entries, with part of fees supporting local kids.

Sep

7

Monday

Blackland Triathlon

Plano, Texas

Triathlon

Sep

10

Thursday

Brick Endurance Summer Triathlon Series

Durham, North Carolina

Triathlon

Sep

11

Friday

Brineman Triathlon

Syracuse, Utah

Triathlon

Event overview The Brineman Triathlon takes place in Syracuse, Utah on September 11, 2026 (a Friday). The event is held near Stillwater Lakes and lists the address 3176 S. Bluff Rd, Syracuse, UT 84075. The organizer describes a spectator-friendly swi..

Sep

12

Saturday

IRONMAN 70.3 Wisconsin

Madison, Wisconsin

Triathlon

Take on IRONMAN 70.3 Wisconsin in Madison on September 12, 2026, with a Lake Monona swim, rolling bike and a scenic hilly run finishing by the State Capitol. Enjoy a lively race day vibe with spectators, VIP options and local flavor.

Sep

12

Saturday

Jen McKenna Paddle and Run

Coeur d'Alene, Idaho

Multisport

Sep

12

Saturday

Outer Banks Triathlon

Manteo, North Carolina

Triathlon

Sep

12

Saturday

Pumpkinman Triathlon Festival

South Berwick, Maine

Triathlon

Celebrate the 20th anniversary Pumpkinman Triathlon Festival in South Berwick, Maine, a cozy fall weekend featuring triathlons Saturday and a festive running festival Sunday. Choose sprint or Olympic triathlon or runs from 1 mile to a 30k, enjoy swag..

Sep

12

Saturday

TimberRidge Adventure Race

Olathe, Kansas

Multisport

Take on TimberRidge Adventure Race in Olathe with 2 hour and 6 hour solo or team options across rugged trails, prairie and waterways. Trek, bike, paddle and navigate with topographic maps in this self supported adventure race experience.

Sep

12

Saturday

Brett Robinson Alabama Coastal Triathlon

Gulf Shores, Alabama

Triathlon

Sep

12-13

Sa - Su

Finger Lakes Triathlon

Canandaigua, New York

Triathlon

Sep

12

Saturday

Sky Trail Adventure Challenge

Pawhuska, Oklahoma

Multisport

Take on the Sky Trail Adventure Challenge at Camp McClintock in Bartlesville, OK on Sept 12, 2026. Climb, zipline, run rugged trails and kayak in an eco friendly event that celebrates the Osage Hills with finisher awards.

Sep

12-13

Sa - Su

Toughman

Stony Point, New York

Triathlon

Sep

13

Sunday

Wenonah Lake Tri/Aqua/Du

Oak Valley, New Jersey

Multisport

Wenonah Lake Tri/Aqua/Du : event overview The Wenonah Lake Tri/Aqua/Du takes place in Wenonah, New Jersey on Sunday, September 13, 2026. The event location is listed at Maple St & N Jefferson Ave, Wenonah, NJ 08090. The race program includes four..

Sep

19

Saturday

Valkyrie Relay - Durango

Durango, Colorado

Multisport

Valkyrie Multisport Relay in Durango on Sept 19, 2026 invites teams and solo racers to take on seven stages blending trail run, mountain and road biking, paddleboard, swim, river paddle and road run. Choose full or sprint courses or tackle the Ultra..

Sep

19

Saturday

Ironman Maryland

Cambridge, Maryland

Triathlon

IRONMAN Maryland in Cambridge combines a Choptank River swim with a scenic, flat bike through Blackwater National Wildlife Refuge. A Crabby Nation favorite and 2027 qualifier, it ranks among North America's best swim and bike courses.

Sep

19

Saturday

She Tris Sprint Triathlon - Carnes Crossroads

Summerville, South Carolina

Triathlon