Ann Arbor Triathlon
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Ann Arbor Tri, Du, & Aquabike : Gregory, Michigan
The Ann Arbor Tri, Du, & Aquabike takes place at the Halfmoon Lake Day Use Facility in Pinckney Recreation Area on Saturday, July 11, 2026. Events use the open water of Halfmoon Lake, paved rural roads for cycling, and the Potowatomi Trail for the run segments. Courses may be changed for safety at the race director's discretion.
Host clubs for the event are the Ann Arbor Tri Club and the University of Michigan Tri Team. A State Park permit or Recreation Passport is required to enter Pinckney Recreation Area. The event follows USA Triathlon distance definitions for the Olympic and sprint formats and includes relay options and a timed open water swim.
Post-race provisions include food for participants; the event also implements Leave No Trace practices and race-day recycling and composting as part of a zero waste effort.
Distances and event formats include: Visit the organization's website for the most recent information.
- Olympic Triathlon: 1500 m swim; 28 mi bike; 5.3 mi trail run
- Sprint Triathlon: 750 m swim; 14 mi bike; 3.5 mi trail run
- Olympic Aquabike: 1500 m swim; 28 mi bike
- Sprint Duathlon: 2 mi run; 14 mi bike; 3.5 mi run
- Sprint Relay: 2 or 3 person team for sprint distances
- Olympic Relay: 2 or 3 person team for Olympic distances
- Open Water 1 mile swim
