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Michigan Triathlon Calendar 2025-2026

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Monthly updates for Michigan

Get new running races (and updates) in your inbox every month.

Explore the best triathlons in Michigan for 2025-2026! Our updated list features 28 exciting races across the region. Find your next race in Michigan below and join the running community at these great events!

February 2026
Feb
15
Su

Gvsu Last Chance Tri

Triathlon
Feb
22
Su

The Abominable Snow Triathlon

Cross Triathlon
March 2026
Mar
7
Sa

Gaylord All Outdoors Tri Winter Triathlon

Triathlon
May 2026
May
17
Su

Shi-Tri

Triathlon
May
24
Su

Bear Lake Triathlon

Triathlon
May
30
Sa

Tri Greenville Triathlon & Duathlon

Triathlon
June 2026
Jun
6
Sa

Island Lake Triathlon

Triathlon
Jun
7
Su

Grand Rapids Triathlon

Triathlon
Jun
13
Sa

M22 Challenge

Multisport
Jun
20
Sa

South Haven Triathlon

Triathlon
Jun
21
Su

Motor City Triathlon

Triathlon
Jun
27
Sa

Tri Goddess Triathlon

Triathlon
July 2026
Jul
11
Sa

Ann Arbor Triathlon

Triathlon
Jul
18
Sa

Cereal City Triathlon

Triathlon
Jul
18
Sa

TriWalloon

Triathlon
Jul
19
Su

TridelSol Olympic Triathlon

Triathlon
Jul
24
Fr

Tri Millennium

Triathlon
Jul
26
Su

Detroit Triathlon

Triathlon
August 2026
Aug
15
Sa

Tamarac Tri

Triathlon
Aug
15
Sa

Chesaning Chamber of Commerce Dry-Tri

Multisport