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 18 exciting races across the region. Find your next race in Michigan below and join the running community at these great events!
September 2026
A sprint triathlon and relay in Lake Orion with a 0.75 km swim, 20 km mixed-terrain bike, and 5 km trail run plus a 100-athlete cap.
A fundraising day of mountain bike and cross country races at Oakdale Trails in Lapeer, with timed adult and youth events, awards, vendors and proceeds for trail maintenance.
IRONMAN 70.3 Michigan in Frankfort, MI features a Betsie Bay swim, a bike route on M-22 through Benzie County and a two-loop 13.1 mile run on paved trails.
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.
Monthly updates for Michigan
Get new running races (and updates) in your inbox every month.
Paddle, bike and run in Bay City on Sunday September 20, 2026 with team canoe or solo kayak options; limited field and proceeds support local community programs.
Sprint and Splash at Brandenburg Park in Chesterfield Township offers a 5K run or walk and an individual duathlon that includes a 2 mile kayak.
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.
February 2027
A winter multisport event at Cannonsburg Ski Area featuring trail running, fat tire biking, and cross country skiing with duathlon, relay, and single race options.
March 2027
A USA Triathlon sanctioned winter multisport event on March 5 and 6 2027 at Forbush Corners MI featuring adult and youth triathlon and duathlon races.
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.
June 2027
Multisport race day at Island Lake State Recreation Area in Brighton, Michigan on June 5, 2027, offering Olympic and sprint triathlons, relays, aquabike, a duathlon, and timed practice swims. Swim in Kent Lake, bike rolling tree lined roads, and run..
Tri Goddess Triathlon hosts sprint and super sprint swim bike run formats at Portage Lake, with a relay option, a timed open water practice swim, and post-race food in Waterloo State Recreation Area.
July 2027
Ann Arbor Tri at Halfmoon Lake offers Olympic and sprint triathlons, duathlon, aquabike, relays and a one mile open water swim in Pinckney Recreation Area.
Race day at Barlow Lake in Middleville MI featuring Olympic, Sprint and Super Sprint triathlons plus duathlons, aquabikes, relays and swim only events.
An annual Rudyard Lions Club event in Northern Michigan featuring a triathlon and a 5K road race on July 25, 2027; individuals and teams can register online.
August 2027
Sprint triathlon at Fremont Lake Park on August 7, 2027 featuring a 750 m swim, 12.4 mile bike, and 5K run with individual and relay entries.
A 15.85 mile Dry-Tri in Chesaning combining a bike ride, a river run, and a kayak or canoe paddle with chip timing and age group competition on 08/14/2027.