Michigan
Michigan Triathlon Calendar 2025-2026
Explore the best triathlons in Michigan for 2025-2026! Our updated list features 21 exciting races across the region. Find your next race in Michigan below and join the running community at these great events!
August 2025
The Shermanator Triathlon, previously held at the Sherman Lake YMCA Outdoor Center in Augusta, Michigan, was a multi-event race featuring an individual triathlon, 2- and 3-person relays, an aquabike,..
The Mark Mellon Triathlon & 5k takes place at Otsego Lake County Park in Gaylord, Michigan. This event features multiple race options including a Sprint Triathlon (750m swim, 20k bike, 5k run), Sprint..
The Michigan Titanium is a premier multi-day endurance event held in Grand Rapids, Michigan, featuring the state's only 140.6-mile ultra-distance triathlon. Participants begin with a 2.4-mile swim in..
The myTEAM TRIUMPH West MI - MiTi Olympic Triathlon takes place in Grand Rapids, Michigan, at Versluis Park Drive Northeast. This USAT-sanctioned event features multiple race options, including the Ol..
The Tamarac Triathlon, held at scenic Fremont Lake Park in Fremont, Michigan, is a sprint triathlon featuring a 750-meter swim, 12.4-mile bike ride, and 5K run. Designed for both seasoned athletes and..
Race the Straits of Mackinac is a multi-event endurance race held in Mackinaw City, Michigan, featuring triathlons, duathlons, and aquabike competitions. Participants swim beneath the iconic Mackinac..
The Barron Lake Triathlon, held in Niles, Michigan, is a scenic multi-sport event suitable for athletes of all levels. The main Sprint Triathlon features a 500-yard swim from a sandy shore on Barron L..
The UP Northwoods Triathlon, held in Iron Mountain, Michigan at Lake Antoine Park, offers a scenic and challenging race experience in the beautiful Northwoods. Participants can choose from several eve..
The MI Triathlon / Duathlon Championship takes place at Belle Isle State Park in Detroit, Michigan, offering a scenic race setting along the Detroit River with views of the city skyline. This event fe..
September 2025
The Sunrise Side Triathlons & Duathlon is a well-established event held in East Tawas, Michigan, along the scenic Lake Huron coast. Celebrating over 20 years, it offers a variety of race options inclu..
The White Lake Fall International & Double Sprint is a two-day multisport event held at The Grand Regal @ Goldston's Beach in White Lake, North Carolina. The International race on Saturday features a..
The Rhoades McKee Reeds Lake Triathlon, held in East Grand Rapids, Michigan, is a premier West Michigan event featuring sprint-distance races including triathlon, duathlon, aqua bike, swim, and a spri..
The Dragon Trails Triathlon (Sprint) is a scenic and rugged sprint triathlon held in Lake Orion, Michigan. The course features a 0.75K (0.46 mile) freshwater swim in Tommy’s Lake, followed by a 20K (1..
IRONMAN 70.3 Michigan is a scenic triathlon event held in Frankfort, Michigan, on the shores of Lake Michigan. The race features a swim in beautiful Betsie Bay, a fast bike course through the flat cou..
The Last TRI is a multisport event held at Stony Creek Metropark in Shelby Township, Michigan, known for its scenic lake and athlete-friendly layout. Scheduled for September 21, 2025, it serves as the..
The Dirty Mitten Gravel Triathlon, held in Middleville, Michigan, is a unique gravel triathlon event recognized as the 2025 Gravel World Championship of the Universe. Based at Camp Manitou-lin, it off..
October 2025
The 5th Annual Grand River Color Tour Triathlon takes place in Eaton Rapids, Michigan, featuring a unique triathlon with a 2k kayak paddle, a 15-mile bike ride, and a 5k run. Held during the vibrant f..
February 2026
The Abominable Snow Triathlon is a unique winter triathlon held at Cannonsburg Ski Area in Belmont, Michigan. This sprint-distance event features trail running (5K), fat tire biking (10K), and cross-c..
May 2026
The Shi-Tri is a unique Run/Paddle/Bike triathlon held in Downtown Owosso, Michigan, along the scenic Shiawassee River. Participants start with a 3.1-mile run or walk from Owosso to McCurdy Park in Co..
June 2026
The M22 Challenge is a scenic multi-sport event held in Sleeping Bear Dunes National Lakeshore, Northern Michigan. It features a 2.5-mile run starting with a challenging sand dune climb, a 17-mile bik..
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