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 28 exciting races across the region. Find your next race in Michigan below and join the running community at these great events!
July 2026
Sprint triathlon and duathlon at Willard Beach Park in Battle Creek on July 18, 2026, with 2 and 3 person relays, a youth Super Sprint, virtual options, and per person registration that includes a shirt and meal.
TriWalloon is a sprint distance multisport event at Walloon Lake, Michigan, featuring swim, bike, run, a duathlon, an aquabike, and relay options. All proceeds support the inner city ministry of Bridge Street Ministries.
A multi-discipline race day at YMCA Camp Manitou-Lin in Middleville, MI on July 19, 2026 featuring Olympic, sprint and super sprint triathlons plus duathlon, aquabike, relays and swim bike run only options. Proceeds benefit myTEAM TRIUMPH West Michig..
A midweek sprint event offering a sprint triathlon and a duathlon with short swim, bike and run legs. Finishers receive a custom medal and postrace food and are eligible for awards.
Tri Millennium is a two day multi sport event at Millennium Park in West Michigan offering Sprint and Olympic triathlon, duathlon, aquabike and youth races, with relay options, professional timing and a charity partner.
A multi-sport event at Millennium Park in Grand Rapids on July 25, 2026, with sprint and Olympic triathlon formats plus duathlon and aquabike. Proceeds support Bridge Street Ministries and volunteer and team roles are offered.
Annual Rudyard Lions Triathlon and 5K in northern Michigan on July 26, 2026. Organized by the Rudyard Lions Club, the event offers individual and team entries and posts course maps and results online.
August 2026
A sprint triathlon at Fremont Lake Park on August 15, 2026, featuring a 750 m swim, 12.4 mile bike, and 5K run, with a relay option and a 150 participant limit.
A community multisport event in Chesaning with a 15.85-mile bike-run-paddle Dry-Tri and a 5K run/walk, staged from Showboat Park with kayak drop-off at Parshallburg Park.
Michigan Titanium in Grand Rapids on August 16, 2026 features triathlon, duathlon, aquabike, relay and swim only races plus a virtual solo option, with distances from sprint up to the full 140.6 mile ultra triathlon.
Multiple triathlon, aquabike, and duathlon formats take place on August 16, 2026, in Mackinaw City with a swim under the Mackinac Bridge, a bike route to Wilderness State Park, and finishes in Fort Mackinac Park.
Team-based Olympic distance triathlon in Grand Rapids on August 16, 2026, with Captain and Angel roles, volunteer opportunities, and an Olympic course of 0.93 mile swim, 40K bike, and 10K run.
A short-course triathlon and duathlon series at Island Lake Recreation Area with swim waves, chip-timed age group awards, a club points championship, wetsuit and safety rules, and an annual memorial award that supports cancer research.
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 lakeside IRONMAN 70.3 in Frankfort, Michigan featuring a Betsie Bay swim, a bike route along M-22 through Benzie County, and a 13.1-mile two-loop run on paved trails and roads. The race has received Athletes’ Choice recognition.
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.