Duathlon Race Calendar in Michigan, United States

Grand Rapids Triathlon

Ada, Michigan, United States

07 Jun, 2026 (Sun)

$56.33 - $399.00

Triathlon, Duathlon, Aquabike, Swimming

12.8K 15K 10.3K 25.6K +17

South Haven Triathlon

South Haven, Michigan, United States

20 Jun, 2026 (Sat)

$59.67 - $129.00

Triathlon, Aquabike, Duathlon

25.8K Half-Marathon 25K +1

TriWalloon

Walloon Lake, Michigan, United States

18 Jul, 2026 (Sat)

$130.00 - $180.00

Triathlon, Aquabike, Duathlon

25.6K 25.7K Half-Marathon 29.9K +2

TridelSol Olympic, Sprint & Super Sprint Triathlon, Duathlon, Aquabike, Relay & Swim Only Event

Middleville, Michigan, United States

19 Jul, 2026 (Sun)

$30.00 - $140.00

Triathlon, Duathlon, Aquabike, Swimming, Cycling, Running

Ultra 41.5K 1.5K 40K +8

Tri Millennium

Walker, Michigan, United States

24 Jul, 2026 (Fri) – 25 Jul, 2026

$45.00 - $139.00

Triathlon, Duathlon, Aquabike

25.6K 3.2K 6.4K 29.9K +8

Sprint and Splash

Chesterfield, Michigan, United States

20 Sep, 2026 (Sun)

$40.00 - $100.00

Running, Duathlon

5K 8.2K

The Dirty Mitten Gravel Triathlon

Middleville, Michigan, United States

20 Sep, 2026 (Sun)

$56.33 - $149.00

Triathlon, Duathlon, Aquabike

28.2K 32.2K 23.3K Ultra +6

2027 Gaylord All Outdoors Tri 45 Winter Triathlon

frederic, Michigan, United States

06 Mar, 2027 (Sat)

$50.00 - $60.00

Triathlon, Duathlon

20K 15K

USA Triathlon Multisport National Championships Festival

South Haven, Michigan, United States

13 May, 2026 (Wed) – 17 May, 2026

Duathlon, Aquabike, Swimrun, Triathlon

7K 41.5K Ultra 6K +5