Michigan
Michigan Triathlon Calendar 2026-2027
Monthly updates for Michigan
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in Michigan for 2026-2027! Our updated list features 29 exciting races across the region. Find your next race in Michigan below and join the running community at these great events!
February 2026
GVSU "LAST CHANCE" TRI on Feb 15, 2026 at GVSU Recreation Center in Allendale, MI is an indoor points based triathlon with timed swim, stationary bike and indoor track run. Take one last shot at qualifying for Collegiate Club Nationals.
Brave snowy trails at the Abominable Snow Tri on Feb 22 at Cannonsburg with multiple formats including fat bike and 5K run. Tri entrants get a snow globe medal and sweatshirt; post race food and proceeds benefit Cannonsburg Ski Patrol.
A two day mushing event in Baldwin, Michigan with multiple dog sled classes, a mixed two dog fun run for sled skijor and fat tire bikes, and a 100-yard kiddies dash. MUSH membership is required.
March 2026
Challenge yourself at the Gaylord All Outdoors Tri 45, a winter triathlon on March 7, 2026 at Forbush Corners featuring a 5 km skate ski, 10 km fat tire bike and 5 km snowy trail run across rolling hills. Enjoy post race snacks, chip timing and a cus..
May 2026
Shi Tri is a scenic run, paddle and bike triathlon along the Shiawassee River in downtown Owosso. Race solo or join a 2 to 3 person relay and help support the Friends of the Shiawassee River and community fitness.
The Bear Lake Triathlon in North Muskegon on May 24, 2026 invites swimmers, cyclists, and runners to choose Sprint or Olympic distances, solo or relay. Expect a friendly lakeside course, custom shirts, finisher medals, and on course support.
Tri Greenville at Baldwin Lake on May 30, 2026 features a sprint triathlon, sprint duathlon, relay teams, a kids tri and the Dougling Dash. Enjoy elevated views of swim, transition and the finish from the Fred Meijer Flat River Trail.
June 2026
Race scenic Island Lake State Recreation Area in southeast Michigan with triathlon, duathlon, aquabike and relay options. Enjoy open water practice swims and rolling wooded courses through forest and meadows.
A multi-distance triathlon in Ada, Michigan on June 7, 2026 featuring a lake-like Thornapple River swim, flat bike roads, and a shaded run. Events range from Super Sprint to Half distances plus relays, swim-only, and virtual options.
M22 Challenge in Sleeping Bear Dunes is a scenic multi sport race with a 2.5 mile run, 17 mile bike and 2.5 mile paddle. Test yourself on dunes and lakeshore routes and soak up the friendly festival vibe in mid June.
Join the Au Sable Valley Triathlon on June 13 for a scenic Mio to Fairview fundraiser benefiting Love INC. Teams or solo athletes 14 and older paddle, pedal and run through river backwaters, hilly roads and forest trails.
Dive into the South Haven Triathlon at Lake Arvesta Farms on June 20, 2026, featuring sprint triathlon, aquabike, duathlon and relays. Start on a fun water slide, enjoy a fully closed bike course and finish with a flat run across the farm.
Race the Motor City Triathlon at Belle Isle Park on June 21, 2026 for scenic Detroit River and skyline views. Distances from super sprint to Olympic plus relays welcome beginners and veteran multisport athletes.
Tri Goddess Triathlon is a women focused multisport celebration at Portage Lake in Waterloo State Recreation Area on June 27, 2026. Race solo or in a relay across triathlon, duathlon or aquabike formats with distances from super sprint to Olympic.
July 2026
Challenge yourself at the Ann Arbor Tri, Du, and Aquabike at Halfmoon Lake, featuring open water swim, scenic country road bike and Potawatomi Trail run. A USA Triathlon State Championship day with races for every level and post race food.
Join the Cereal City Triathlon and Duathlon at Willard Beach Park in Battle Creek, MI, with tri, du, super sprint, relay and virtual options. Registration includes a t shirt, finisher medal and post race meal beside scenic Goguac Lake.
On July 18, 2026, dive into summer at TriWalloon on Walloon Lake with sprint triathlon, duathlon, aquabike and relay options set on a scenic 600 meter swim, 12.4 mile bike and lakeside run. Proceeds benefit Bridge Street Ministries.
Race lakeside at Camp Manitou Lin in Middleville with triathlon, duathlon, aquabike and swim options. Scenic beach swim, rolling roads and lakeshore run routes, limited entries and proceeds support myTEAM TRIUMPH.
Tri Millennium returns to Millennium Park July 24 and 25 2026 with Olympic and Sprint triathlon, duathlon, aquabike, relays and kids races. Calm swim waters and rolling bike roads make a scenic summer race supporting Bridge Street Ministries.