Triathlon Calendar United States 2025-2026

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Explore the best triathlons in the United States for 2025-2026! Our updated list features 614 exciting races across the country. Find your next race in the United States below and join the running community at these great events!

May 2025
May
11
Sunday

Cedar River Triathlon

Triathlon
The Cedar River Triathlon, taking place on May 11, 2025, at Lake Wilderness in Maple Valley, WA, is an exciting early-season triathlon event. Participants will tackle a 1/4 mile swim in the scenic lak..
May
11
Sunday

Nashville Women's Triathlon

Triathlon
The Nashville Women's Triathlon is an empowering event designed for women of all backgrounds and skill levels, taking place in Nashville's scenic Centennial Park. Participants can choose from various..
May
11
Sunday

Mighty Mother's Day Duathlon

Duathlon
The Mighty Mother's Day Duathlon is a popular multi-sport event held in East Islip, NY, celebrating Mother's Day. Scheduled for May 11, 2025, it features various competitions including an Individual T..
May
11
Sunday

Coffman YMCA Triathlon

Triathlon
The Coffman YMCA Sprint Triathlon is an exciting event taking place in Springboro, Ohio, designed for both novice and experienced triathletes. Participants will start with a 300-yard serpentine swim i..
May
11
Sunday

Bridges Off Road Triathlon

Triathlon
The Bridges Off Road Triathlon is an exciting super-sprint triathlon event taking place in Albuquerque, NM, on May 11, 2025. Participants can choose from three categories: an adult entry for ages 18 a..
May
11
Sunday

Tri Girl Triathlon and Duathlon

Triathlon
The Tri Girl Triathlon and Duathlon is a women's-only event held in Houston, Texas, celebrating Mother's Day. Participants can choose from various events, including a Duathlon, Super Sprint Triathlon,..
May
16-18
Fr - Su

Xterra North American Championship

Cross Triathlon
The XTERRA North American Championship is a premier off-road triathlon event held at Oak Mountain State Park in Pelham, Alabama. Scheduled for May 16-18, 2025, this three-day festival features a varie..
May
17
Saturday

Woman of Steel Triathlon

Triathlon
The Woman of Steel Triathlon is Utah's premier all-women's triathlon and 5K run, taking place in American Fork. Participants will compete in a sprint triathlon format, which includes a 300-meter swim,..
May
17
Saturday

MomsTRI Women's Triathlon

Triathlon
The MomsTRI Women's Sprint Triathlon is an empowering event designed exclusively for women, taking place in Goodyear, Arizona. This triathlon encourages participants of all skill levels, from novices..
May
17
Saturday

Root River Triathlon

Triathlon
The Root River Triathlon, established in 1998, is a unique non-swimming triathlon held in the scenic Bluff Country of Houston, Minnesota. This exciting event features a variety of activities, includin..
May
17
Saturday

She Tris Sprint Triathlon

Triathlon
The She Tris Sprint Triathlon at I'On Club is an empowering event designed exclusively for women of all skill levels, taking place in Mount Pleasant, SC. Participants can choose from various formats,..
May
17
Saturday

Dickson Endurance Triathlon

Triathlon
The Dickson Endurance, Olympic and Iron Nugget Sprint Triathlon is set to take place at Montgomery Bell State Park in Burns, TN. This event features a variety of races, including the Iron Nugget Sprin..
May
17
Saturday

HarryMan Triathlon

Triathlon
The HarryMan Triathlon, held annually in Stony Point, New York, offers challenging endurance races for multi-sport athletes. Scheduled for May 17, 2025, the event features both "Half" Ironman (long di..
May
17
Saturday

IRONKnights Triathlon

Triathlon
The North Penn IRONKnights Triathlon is an annual event designed specifically for North Penn Elementary students, featuring various race divisions for different grade levels, from kindergarten through..
May
17-18
Sa - Su

French Creek Trifest Triathlon

Triathlon
The 2025 French Creek TriFest, taking place at French Creek State Park in Elverson, PA, features a variety of competitive events over the weekend of May 17-18. Participants can choose from an Olympic..
May
17
Saturday

QCKG Tri-It Triathlon

Triathlon
The QCKG Tri-It Mini Triathlon is an exciting annual event taking place in Colona, Illinois. Participants will engage in a fun and family-friendly course that includes a 10K kayak, a 10-mile bike ride..
May
17-18
Sa - Su

Mighty Moraine Spring Multi-Sport Festival

Triathlon
The Mighty Moraine Spring Multi-Sport Festival is set to take place on May 17-18, 2025, at Moraine State Park in Portersville, PA. This exciting event features a variety of races, including Olympic an..
May
17-18
Sa - Su

Lago Mar Multisport Festival

Triathlon
The Lago Mar MultiSport Festival is a vibrant sports event taking place in Texas City, TX, from May 17 to May 18, 2025. This festival features a variety of competitions, including a Sprint Triathlon,..
May
17
Saturday

White Deer Triathlon

Triathlon
The White Deer Triathlon, scheduled for May 17, 2025, in Boulder Junction, WI, features a thrilling combination of water, cycling, and running events. Participants can choose between an individual rac..
May
17
Saturday

Glimmerglass Triathlon

Triathlon
The Glimmerglass Triathlon, held in Cooperstown, NY, is a multi-discipline race returning after a hiatus, scheduled for May 17, 2025. The event features a unique start with a 1.5-mile open water paddl..
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