Triathlon Calendar United States 2025-2026

Dec

14

Sunday

Key West Triathlon

Key West, Florida

Triathlon

The Key West Triathlon is a popular multisport event held at Higgs Beach in Key West, Florida. The race offers various formats, including an international triathlon, long sprint, duathlon, aquabike, a..

Dec

14

Sunday

Ironman 70.3 Florida

Haines City, Florida

Triathlon

The IRONMAN 70.3 Florida is a premier triathlon event held in Haines City, Florida, featuring a flat and fast swim in Lake Eva, a quick bike course, and a scenic run along the coastal roads. This race..

Dec

14

Sunday

Tinsel Triathlon

Hemet, California

Triathlon

The 39th Annual Tinsel Triathlon is a celebrated endurance event taking place in Hemet, California. This reverse sprint pool triathlon is one of the oldest and largest of its kind on the West Coast, c..

Dec

21

Sunday

Rudolphs Aquabike

Visalia, California

Multisport

Rudolph's Aquabike is an exciting end-of-season Super Sprint event taking place in Visalia, California. Participants can choose between an individual Aquabike or an Aquabike Relay, featuring a 400-yar..

Dec

31

Wednesday

Corpus Christi Triathlon

Corpus Christi, Texas

Triathlon

The Corpus Christi Triathlon Club, based in Corpus Christi, TX, is a USA Triathlon-affiliated organization that promotes the multi-sport lifestyle through training, racing, and community events. The c..

Feb

14-16

Sa - Mo

Susitna 100

Big Lake, Alaska

Multisport

The Susitna 100 is a challenging winter race held in Alaska, featuring both a 100-mile and a 50K course. Participants navigate marked trails through stunning landscapes and varying conditions, showcas..

Feb

15

Sunday

Chilly Willy Duathlon

St. Petersburg, Florida

Duathlon

The Chilly Willy Duathlon is a USAT sanctioned event held at Fort De Soto Park in St. Petersburg, Florida. This popular race features a standard duathlon format consisting of a 3.1-mile run, a 10-mile..

Feb

19-21

Th - Sa

Florida ANVIL Ultra Triathlon

Clermont, Florida

Triathlon

The Florida ANVIL Ultra Triathlon, organized by Mammoth Endurance, is a premier endurance event held at Lake Louisa State Park in Clermont, Florida. Established in 1985, it is recognized as the origin..

Feb

21

Saturday

The Winter Challenge Off-Road Triathlon

Springfield, South Carolina

Triathlon

The Winter Challenge Off-Road Triathlon is a rugged outdoor event held at Dome Farms in Springfield, South Carolina. It features a challenging course that includes a 7-mile trail run, a 6-mile kayak o..

Mar

7

Saturday

Pasadena Triathlon

Pasadena, California

Triathlon

The Pasadena Triathlon & Angel 5k is set to take place at the iconic Rose Bowl Stadium in Pasadena, California, on March 7, 2026. Celebrating its 20th year, this family-friendly event features a varie..

Mar

14

Saturday

TRI 4 THE CURE AZ Triathlon

Anthem, Arizona

Triathlon

TRI 4 THE CURE AZ is a multi-sport event held at the Anthem Community Center, featuring Sprint and Super Sprint triathlons, aquabike, duathlon, and a 5km run. Organized by Tri Scottsdale, this event a..

Mar

28

Saturday

Merrill Ranch Triathlon

Florence, Arizona

Triathlon

The Merrill Ranch Triathlon is an exciting multisport event designed to kick off the spring racing season. Participants can choose from various categories, including an adult triathlon featuring a 400..

Mar

28

Saturday

Ironman 70.3 Oceanside

Oceanside, California

Triathlon

The IRONMAN 70.3 Oceanside is a premier triathlon event held in Oceanside, California, marking the season opener for many athletes. The race features a scenic swim in the Pacific Ocean harbor, a fast..

Mar

29

Sunday

Ironman 70.3 Texas

Galveston, Texas

Triathlon

IRONMAN 70.3 Texas is a triathlon event held on Galveston Island, offering athletes a scenic course featuring a swim in calm Gulf waters, a flat bike ride along coastal roads, and a scenic run through..