Triathlon Race Calendar in United States

Marsh Creek Sprint Triathlon

Downingtown, Pennsylvania, United States

Sep 20, 2026 (Sun)

Triathlon

Reston Triathlon

Reston, Virginia, United States

Sep 20, 2026 (Sun)

Triathlon

Ultra 45.8K

Robious Landing Triathlon

Midlothian, Virginia, United States

Sep 20, 2026 (Sun)

$70.00 - $170.00

Triathlon, Duathlon, Aquabike

23.8K 24.9K 25.9K 20K +3

Tulsa Area Triathletes Tulsa Tri 2026

Barnsdall, Oklahoma, United States

Sep 20, 2026 (Sun)

Triathlon

New England Womxn's Trail Multisport Festival

Nottingham, New Hampshire, United States

Sep 26, 2026 (Sat)

$40.00 - $120.00

Triathlon, Running

Individual Triathlon (Swim/Bike/Run) Individual TWO Sport (swim/bike, bike/run or swim/run) Relay Triathlon (swim/bike/run) Individual ONE Sport (swim, trail/gravel bike OR trail run)

Giant Acorn Triathlon

Spotsylvania, Virginia, United States

Sep 26, 2026 (Sat) – Sep 27, 2026

Triathlon

DQ Treasure Island Sprint Triathlon, Duathlon, Aquabike, & Kayak Triathlon *#

PT Pleasant, New Jersey, United States

Sep 27, 2026 (Sun)

$105.00 - $150.00

Triathlon, Duathlon, Aquabike

22.1K 24.9K 17.3K 24.1K +3

Tri to Inspire

Santa Rosa, California, United States

Sep 27, 2026 (Sun)

$45.00 - $170.00

Triathlon

19.8K 6.6K +4

2026 Cal Tri DFW - 9.27.26

Valley View, Texas, United States

Sep 27, 2026 (Sun)

Free - $33.86

Running

5K 10K

Ballwin Kids Triathlon

Ballwin, Missouri, United States

Sep 27, 2026 (Sun)

$42.50

Triathlon

3.2K 6.4K

Santa Cruz Triathlon

Santa Cruz, California, United States

Sep 27, 2026 (Sun)

$125.00 - $230.00

Triathlon, Aquabike, Swimrun

49.9K 24.1K 40.2K 6.4K +2

2026 J-Hawk Latebird Race Series: Duathlon, Triathlon (Olympic, Sprint, & SuperSprint), AquaBike (Oly & Sprint)

Whitewater, Wisconsin, United States

Sep 27, 2026 (Sun)

$50.00 - $83.00

Triathlon, Duathlon

25.7K 29K 48.3K