Triathlon Events in United States 🇺🇸 2026 — Calendar

48 Upcoming triathlon events listed in United States from June 2026 to December 2027 with the most events in California (8), New York (5) and Wisconsin (5), including Ironman 70.3 Happy Valley and IRONMAN 70.3 NEW YORK.

101 Athletes targeting these events on Intervals.icu

IM 70.3 Boulder

Boulder, CO, USA Swim Ride Run

Patriot Half

Half distance triathlon

East Freetown, Freetown, MA, USA Swim Ride Run

Ironman 70.3 Happy Valley

1 Beaver Stadium, University Park, PA 16802, USA Ride Run Open Water Swim

IRONMAN Rockford 70.3

Rockford, IL, USA Open Water Swim Ride Run

Monte Rio Triathlon

Triathlons of varying distances

Monte Rio, CA, USA Swim Ride Run

Motor City Triathalon

Belle Isle, Detroit, MI, USA Run Open Water Swim Ride

Cal Tri La Crema

Cal Tri La Crema starts at iconic Johnson's Beach with a Russian River swim, includes a scenic bike ride along River Roa…

16215 First St Swim Ride Run

Cohasset Triathlon

Cohasset, MA, USA Open Water Swim Ride Run

Ironman 70.3 Muncie

Muncie, IN, USA Open Water Swim Ride Run

Lake Whatcom Triathlon

https://www.lakewhatcomtriathlon.com/?nis=6&ch=1

2114 Electric Ave, Bellingham, WA 98229, USA Ride Open Water Swim Transition_sport Run

Litchfield Hills Olympic Triathlon

Litchfield Hills Triathlon

580 West Hill Road New Hartford CT Open Water Swim Ride Run

70.3 Musselman

35 Lake Front Drive, Geneva, NY 14456 Ride Run Swim

Ironman 70.3 Musselman

Geneva, NY 14456, USA Swim Ride Run Transition_sport

CU Triathlon

2501 Fields S. Drive Ride Run Swim

Ironman Lake Placid 2026

IRONMAN Lake Placid is a truly magical event that draws athletes from all corners of the globe. Every aspect of this unf…

Lake Placid, NY 12946, USA Open Water Swim Ride Run

Mountain Lakes Triathlon

Sprint & Olympic distance triathlons

Guntersville, AL, USA Ride Run Swim Transition_sport Other

Chisago Lakes Sprint Triathalon

EVENT DETAILS The swim is at beautiful Paradise Park at Chisago Lake in Chisago City. In water start with waves of arou…

11031 Stinson Ave, Chisago City, MN 55013, USA Run Ride Swim

Ironman 70.3 NM

Ironman 70.3 Ruidoso New Mexico

Socorro, NM 87801, USA Ride Run Swim

Steamboat Lake Sprint Triathlon

- [www.withoutlimits.co](http://www.withoutlimits.co) - [www.TriReg.com/2100](https://www.TriReg.com/2100) Categorie…

61105 Rcr 129, Clark, CO, 80428 Swim Ride Run

USAT National Championships - Olympic

Milwaukee, WI, USA Swim Ride Run Transition_sport

USAT National Championships - Sprint

Milwaukee, WI, USA Swim Ride Run Transition_sport

USA Triathlon National Championships

USAT National Championship

Milwaukee, WI, USA Transition_sport Other

Ironman 70.3 Northern California

Redding, CA, USA Ride Run Swim

Chicago Triathlon

Olympic and Sprint Triathlon

Chicago, IL, USA Ride Run Open Water Swim

Ironman Wisconsin 70.3

Madison, WI, USA Open Water Swim Ride Run

IRONMAN 70.3 Santa Cruz

IRONMAN 70.3 Santa Cruz

400 Beach St, Santa Cruz, CA 95060, USA Ride Run Swim

Ironman Wisconsin

Madison, WI, USA Open Water Swim Ride Run

IM Maryland

Cambridge, MD 21613, USA Run Open Water Swim Ride

IRONMAN 70.3 Washington Tri-Cities

https://www.ironman.com/races/im703-washington-tri-cities/course

500 Amon Park Dr, Richland, WA 99352, USA Ride Run Open Water Swim Transition_sport

Desert's Edge Triathlon Series

Welcome to registration for the **2026 Desert's Edge Triathlon Series**. This event is being produced with people who…

1800 11 8/10 Rd, Loma, CO, 81524 Swim Ride Run

IRONMAN 70.3 NEW YORK

IRONMAN 70.3 New York at Jones Beach September, 26th, 2026.

Jones Beach, New York, USA Open Water Swim Transition_sport Ride Run

Apple Valley Reverse Triathlon

Sprint Reverse Triathlon

14999 Dale Evans Pkwy Run Ride Swim

Ironman Chattanooga

Chattanooga, TN, USA Swim Ride Run

Santa Cruz Triathlon

Santa Cruz, CA, USA Open Water Swim Ride Run

Waco 70.3

Waco, TX, USA Open Water Swim Ride Run

Big Apple Triathalon

New York, NY, USA Ride Run Open Water Swim

IRONMAN 70.3 North Carolina

Wilmington, NC, USA Open Water Swim Ride Run Transition_sport

Wilmington 70.3

Wilmington, NC, USA Open Water Swim Ride Run

Wilmington 70.3

North Carolina, USA Open Water Swim Ride Run

Ironman Ca

Sacramento, CA, USA Open Water Swim Ride Run

NAPA Fall

7600 Knoxville Rd, Napa Open Water Swim Ride Run

The Edisto Island Triathlon Pro Am

3701 Docksite Road Edisto Island Ride Run Swim

IronMAN Florida 2026

Panama City Ride Swim Run Transition_sport

70.3 La Quinta

Ironman 70.3 La Quinta

La Quinta, CA, USA Ride Run Swim

Ironman 70.3 Florida

Haines City, FL, USA Open Water Swim Ride Run

Olympic Triathlon - Clermont

Clermont, FL, USA Other Open Water Swim Ride Run

Ironman Texas

Texas, USA Ride Run Swim

Ironman Texas

The Woodlands, TX, USA Open Water Swim Ride Run