Michigan
Michigan Triathlon Calendar 2026-2027
Monthly updates for Michigan
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Explore the best triathlons in Michigan for 2026-2027! Our updated list features 33 exciting races across the region. Find your next race in Michigan below and join the running community at these great events!
August 2026
Barron Lake Triathlon in Niles, Michigan on August 22, 2026 features a 500 yard swim, 15 mile bike and 3.1 mile run for adults, a relay option, and separate timed and non timed kids triathlons with age specific rules.
September 2026
Experience a premier multi sport event at Belle Isle State Park in Detroit. Choose from triathlon duathlon and aquabike categories while enjoying views of the Detroit River and the city skyline.
Multisport event at John Collins Park in East Grand Rapids on September 6, 2025. Sprint distance options include a 750 meter swim, 20 km bike and 5 km run; duathlon, aquabike, relay and swim only formats are offered.
A sprint triathlon in Lake Orion with an open water swim, 12.4 mile mixed-terrain bike and a 5K trail run on September 13, 2026. Registration opens October 21, 2025 and entries are capped at 100 participants.
A community fundraising event at Oakdale Trails featuring timed mountain bike single-track races, a 5k cross-country run and ruck, youth races, vendors, and activities to support Friends of Oakdale Trails.
A half distance triathlon in Frankfort, Michigan with a Betsie Bay swim, a bike route along historic M-22 and a 13.1 mile two-loop run. The event has received multiple Athletes' Choice Awards.
A multisport event at Stony Creek Metropark in Shelby Township, Michigan featuring Olympic, Sprint and Super Sprint triathlon formats, duathlon and aquabike races plus relay options. Registration opens November 27 2025.
A multisport event at Camp Manitou-lin in Middleville Michigan on September 20 2026 offering sprint and Olympic triathlon duathlon and aquabike formats plus relays and a month long virtual option.
Experience a unique triathlon twist in Bay City featuring a 5 km paddle, 20 km bike, and 5 km run. Compete individually in the kayak division or partner up for the canoe team and relay categories.
Sprint and Splash pairs a 5K run or walk with a duathlon that adds a 2 mile paddle on Lake St Clair. Held at Brandenburg Park, the event includes a shirt, finisher medal, chip timing and post race refreshments.
October 2026
A multi-sport event in Eaton Rapids combining a 2 km kayak, 15 mile bike, and 5 km run that ends with a colored powder finish. Options include individual triathlon, three-person relays, and a 5K-only entry.
March 2027
Experience a unique winter challenge in Frederic, Michigan, featuring a skate ski, fat-tire bike ride, and trail run. Join as a solo athlete or a relay team for a memorable multisport adventure in the snow.
May 2027
Shi-Tri is a run, paddle and bike triathlon in Downtown Owosso along the Shiawassee River. Entrants may compete individually or as a 2 to 3 person relay and choose to race or take a recreational pace.