Ann Arbor Tri, Du, & Aquabike
- Date
- July 11, 2026
- Distance
- Olympic Triathlon · Sprint Triathlon · Olympic Aquabike & more
From the Organizer
Since 1986, the iconic and classic Ann Arbor Tri has been held in the Pinckney Recreation Area at Halfmoon Lake, one of the largest state parks in all of Michigan. You’ll swim the open waters of Halfmoon, bike the rolling paved country roads of the surrounding rural area, and then run the Potowatomi Trail. It’s a classic course you’ll come back to again and again.
Choose Your Challenge!
Olympic Triathlon — 1500 meter swim (64 lengths in a standard metric pool), 28-mile paved road bike, 5.3-mile trail run (Yes, it's really an Olympic: (USAT Distances Defined)
Sprint Triathlon — 750-meter swim (32 lengths in a standard metric pool),14-mile paved road bike, 3.5 mile trail run
Olympic Aquabike (swim bike done) — 1500 meter swim, 28-mile paved road bike
Sprint Duathlon — 2-mile paved run, 14-mile paved road bike, 3.5 mile trail run
Olympic Relay — team up with one or two friends to complete our Olympic Triathlon together
Sprint Relay — team up with one or two friends to complete our Sprint Triathlon together
Park Entry
A State Park permit or Recreation Passport is needed to enter Pinckney Recreation Area. Visit the Michigan Department of Natural Resources here for pricing and more information.
Host Club
The Ann Arbor Tri Club and the University of Michigan Tri Team will be your host clubs for this event. We are grateful to them for providing volunteers and bringing sharing their passion, dedication, and spirit to the Ann Arbor Tri!
To learn more about Ann Arbor Tri Club, CLICK HERE.
To learn more about The University of Michigan Tri Team CLICK HERE.
To learn more about our club sponsorship program, CLICK HERE.
Course
Please note that in the interest of safety, all courses are subject to change at any time at the discretion of the race director.
750m Swim Course Map (2x for Oly)
USA Triathlon Distance Defined
Start Times
While start times are noted in the event information, all start times are subject to change. All participants must be at the mandatory race meeting on the beach at 7:15 AM and ready to race by 7:30 AM. An official race schedule will be sent in the pre-race information.
Post-Race Party
Stick around post race for food and festivities! Our Epic staff and volunteers will be cooking up pancakes, breakfast burritos, and more for race participants.
Zero Waste
The event is a Leave No Trace event. Learn more about our race-day recycling and composting efforts here. Want more information about running a great race and leaving no trace? Click here to visit Happy Planet Running!
→ Read the 2023 Ann Arbor Tri sustainability report here!
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
82°
Typical Low
59°
Based on US Climate Normals data from Hell, 7 mi from the venue.
Host City
About Gregory, MI
Elevation
939 ft
Nearest Airport
LAN
Capital Region International Airport · 32 mi
Major Hub
DTW
Detroit Metropolitan Wayne County Airport · 42 mi
Time Zone
Eastern Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Ann Arbor Tri, Du, & Aquabike, put it on the calendar, and turn “someday” into a start date.
33
Days to train
- Race
- Ann Arbor Tri, Du, & Aquabike
- Date
- July 11, 2026
Coming Up
More Triathlon races near Gregory, MI
First Try Triathlon
26 miles away
Motor City Triathlon
51 miles away
Tri Goddess Triathlon
17 miles away
Chesaning Chamber of Commerce Dry-Tri
47 miles away
From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
Three sports, one race — swim, bike, run in sequence, with transitions that are a discipline of their own.
Open water, open roads, and competition with yourself. Cross the finish line knowing what it took to get there.
Triathlon
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think.
Frequently Asked Questions (FAQs)
- What is the Ann Arbor Tri, Du, & Aquabike?
- Ann Arbor Tri, Du, & Aquabike is a triathlon race held in Gregory, Michigan on July 11, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more triathlon races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the Ann Arbor Tri, Du, & Aquabike?
- Saturday, July 11, 2026 in Gregory, Michigan at Halfmoon Lake Day Use Facility, Pinckney Recreation Area, Gregory, MI. Check the event page for exact start times and wave schedules.
- How do I register for the Ann Arbor Tri, Du, & Aquabike?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
Ann Arbor Tri, Du, & Aquabike
Jul 11, 2026