Duathlon Race Calendar in United States

YFC Seeley Lake Challenge Triathlon/Duathlon

Seeley Lake, Montana, United States

Aug 1, 2026 (Sat)

$35.00 - $100.00

Triathlon, Duathlon

22K 21.7K 26.7K Half-Marathon +5

SYLVANIA TRIATHLON, DUATHLON, AQUABIKE & RELAY Presented by Premier Wealth Management Group

Sylvania, Ohio, United States

Aug 2, 2026 (Sun)

$55.00 - $119.00

Triathlon, Duathlon

25.4K 26.6K 41.1K Ultra +4

Post Falls Triathlon/Duathlon

Post Falls, Idaho, United States

Aug 2, 2026 (Sun)

$100.00 - $185.00

Triathlon, Duathlon

24.6K 26.4K

-TRI Columbus

Columbus, Indiana, United States

Aug 8, 2026 (Sat)

$45.00 - $75.00

Triathlon, Duathlon, Running

21.7K +2

2026 Brigantine Beach Triathlon

Brigantine, New Jersey, United States

Aug 8, 2026 (Sat)

$75.00 - $145.00

Triathlon, Duathlon, Aquabike

24.5K 24.1K 18.1K +1

AdventHealth Cool Sommer Mornings Triathlon\Duathlon\5K Series #3

Clermont, Florida, United States

Aug 9, 2026 (Sun)

$45.00 - $225.00

Running, Triathlon, Swimrun, Duathlon, Aquabike

5K 18.6K 5.4K 19.8K +8

Shelby YMCA Triathlon Duathlon

Shelby, Ohio, United States

Aug 15, 2026 (Sat)

$50.00 - $75.00

Triathlon, Duathlon

Triathlon (individual) Duathlon (individual) Triathlon (team) Duathlon (team)

Pennsylvania State Championship Mighty Moraine Fall Multi-Sport Festival

Portersville, Pennsylvania, United States

Aug 15, 2026 (Sat) – Aug 16, 2026

$65.00 - $160.00

Triathlon, Aquabike, Duathlon

Ultra 41.5K 25.8K 27.5K +7

Brookville Olympic Triathlon, Duathlon, & Aquabike; Sprint Triathlon & Aquabike #

Barnegat Township, New Jersey, United States

Aug 15, 2026 (Sat)

$100.00 - $185.00

Triathlon, Duathlon, Aquabike

Ultra 49.6K 41K 25.3K +4

Americana YMCA Splash and Dash

Zachary, Louisiana, United States

Aug 16, 2026 (Sun)

$35.00

Duathlon

1.6K 2.4K 3.2K 4.8K +6

Game On! Key Largo Triathlon Summer

Key Largo, Florida, United States

Aug 16, 2026 (Sun)

$139.00 - $289.00

Triathlon, Duathlon, Aquabike

Ultra 41.4K 25.3K 26.6K +3

2026 CVC San Diego Triathlon and San Diego Tri Series 5K

Chula Vista, California, United States

Aug 16, 2026 (Sun)

$43.00 - $146.00

Duathlon, Running

19K 5K