Triathlon Calendar United States 2025-2026

Header image

Explore the best triathlons in the United States for 2025-2026! Our updated list features 616 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
18
Sunday

Shi-Tri

Triathlon
The Shi-Tri is a community-focused triathlon event taking place in Downtown Owosso, Michigan. Participants can engage in a Run/Paddle/Bike format, starting with a 3.5-mile run along a scenic river tra..
May
18
Sunday

Upper Dublin Triathlon

Triathlon
The Upper Dublin Triathlon/Duathlon/Aquabike/Run is a multi-sport event taking place in Fort Washington, PA, organized by the Upper Dublin Township Parks & Recreation Department. This USAT-sanctioned..
May
18
Sunday

Game On Ponte Vedra Beach Triathlon

Triathlon
The Game On! Ponte Vedra Beach Triathlon is set to take place on May 18, 2025, at Mickler's Landing in Ponte Vedra Beach, Florida. This exciting event features a variety of competitions, including Oly..
May
18
Sunday

New England Season Opener

Triathlon
The New England Season Opener is a premier athletic event taking place at Hopkinton State Park, featuring both Duathlon and Triathlon competitions. This scenic race showcases tree-lined park roads and..
May
18
Sunday

Playtri Fort Worth Triathlon

Triathlon
The Playtri Fort Worth Triathlon & Run-Bike-Run I. is a multi-sport event scheduled for May 18, 2025, at Marine Creek Public Boat Ramp in Fort Worth, Texas. Participants can choose from various events..
May
18
Sunday

Independence Triathlon

Triathlon
The Independence Triathlon, scheduled for May 18, 2025, at Lake Nockamixon State Park in Quakertown, PA, offers a variety of events for athletes of all levels. Participants can choose from the Indepen..
May
18
Sunday

Onion Man Triathlon

Triathlon
The Onion Man Triathlon is an annual event taking place in Walla Walla, Washington, designed to be accessible for both beginners and elite athletes. Scheduled for May 18, 2025, this grassroots triathl..
May
18
Sunday

Lake Lou Yaeger Triathlon

Triathlon
The Lake Lou Yaeger Triathlon, taking place in Litchfield, Illinois, offers a variety of race options for athletes, including individual and relay triathlons, aquabike events, and a special high schoo..
May
18
Sunday

Bear Triathlon

Triathlon
The Bear Triathlon is an inclusive event scheduled for May 18, 2025, in Bear, Delaware. It features various race formats, including Sprint, Relay Sprint, Olympic, and youth categories for ages 7-15. T..
May
18
Sunday

Kansas City Triathlon

Triathlon
The Kansas City Triathlon is a premier triathlon event taking place in Kansas City, MO, featuring a variety of race formats including Olympic and Sprint Triathlons, a Sprint Duathlon, and a Relay opti..
May
18
Sunday

Dunedin Rotary Triathlon

Triathlon
The Dunedin Rotary Triathlon, scheduled for May 18, 2025, is a popular sprint distance event held at Honeymoon Island State Park in Dunedin, Florida. Participants can choose from various categories, i..
May
18
Sunday

OCNJ Triathlon

Triathlon
The OCNJ Triathlon/Duathlon is a multi-sport event taking place in Ocean City, New Jersey, featuring various competitions for participants of all ages. Scheduled for May 18, 2025, the event includes a..
May
18
Sunday

Mack Cycle 305 Triathlon

Triathlon
The Mack Cycle 305 Triathlon is a premier triathlon event held annually in Key Biscayne, Florida, attracting athletes from around the globe. Scheduled for May 18, 2025, it features multiple race forma..
May
18
Sunday

JerseyMan Triathlon

Triathlon
The JerseyMan Triathlon is a multi-sport event taking place in Lebanon, NJ, featuring a variety of competitions including a Long Course Triathlon, Duathlon AquaBike, and Sprint Triathlon. Participants..
May
21
Wednesday

South Fork Duathlon

Duathlon
The South Fork Duathlon is an exciting multi-sport event taking place in Whitehouse, Ohio. This duathlon features a combination of running and biking, making it suitable for both experienced athletes..
May
23
Friday

Clear Lake Triathlon

Triathlon
The Splash & Dash - TRI Clear Lake Triathlon is an exciting event designed for youth aged 7-15, promoting a fun and active family weekend. Scheduled for May 23, 2025, participants can choose between t..
May
23
Friday

Lakeside Double Sprint Triathlon

Triathlon
The Lakeside Double Sprint Triathlon is set to take place in Greenville, SC, on May 23, 2025. This exciting event features two main competitions: a Sprint Triathlon and a Sprint Relay, catering to bot..
May
24
Saturday

Memorial Triathlon

Triathlon
The Memorial Triathlon, celebrating its 20th anniversary, will take place at New Brighton High School in New Brighton, PA. This event features a 300-meter serpentine swim, an 11-mile bike ride, and a..
May
24
Saturday

Goose Pond Frantic Frog Sprint Triathlon

Triathlon
The Goose Pond Frantic Frog Sprint Triathlon is set to take place at the Goose Pond Colony Resort in Scottsboro, Alabama, on May 24, 2025. This exciting event features a 500-meter swim, a 14-mile bike..
May
24
Saturday

Salute to the Military Triathlon

Triathlon
The Salute to the Military Triathlon is a family-friendly event that honors military personnel and veterans. Scheduled for May 24, 2025, in Warrenton, VA, it features a variety of races including a Sp..
Articles
Mizuno Wave Rider 28: Elevating the Legacy of a Running Icon
Garmin Forerunner Review: Garmin Forerunner Series
Stride with Confidence: A Comprehensive Guide to Saucony Running Shoes
Essential Running Form Techniques for Enhanced Performance and Injury Prevention