Ann Arbor Tri, Du, & Aquabike
Ann Arbor Tri, Du, & Aquabike is a triathlon, aquabike, duathlon, and swimming race on July 10, 2027 in Gregory, MI, with entry fees from $75 to $340.
- Date
- July 10, 2027 (352 days to go)
- Price
- $75–$340
- Sports
- TriathlonAquabikeDuathlonSwimming
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 — 1.5-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
City 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.
352
Days to train
- Race
- Ann Arbor Tri, Du, & Aquabike
- Date
- July 10, 2027
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From Endurance Grid
About These Sports
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Triathlon
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think. Three sports in one race means three movements to train and race day never gets monotonous.
Aquabike
A swim followed by a bike — a triathlon without the run. Sprint and Olympic distances, often alongside a tri at the same venue.
Duathlon
Run, bike, run. The multi-sport format without the swim. Two disciplines, one race — a great bridge between running and triathlon.
Open Water Swimming
Open water races take place in lakes, rivers, bays, and oceans. Distances can run anywhere from a short 500m swim to 10K marathon events. Just you and the water.
Coming Up
More Triathlon races near Gregory, MI
Chesaning Chamber of Commerce Dry-Tri
5K · Sprint · From $30 · 805 S Front St
47 miles away
Capital City Kids Triathlon
From $25 · Hawk Island County Park
28 miles away
Dragon Trails Triathlon (Sprint)
Sprint · From $100 · 1301 Clarkston Road
45 miles away
Last TRI
Sprint · Olympic · From $75 · 4300 Main Park Dr
53 miles away
Plan your trip
Make it a Racecation
Coming from out of town? There's more to Gregory than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to GregoryFrequently Asked Questions (FAQs)
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Ann Arbor Tri, Du, & Aquabike
Jul 10, 2027