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Ann Arbor Tri, Du, & Aquabike

Saturday, July 11, 2026
Halfmoon Lake, Pinckney, Michigan

Description

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.

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.

 

Relay Information

Part 1: Registration
If you are a Team Captain:
Click “Register”
Select “Relay”
Continue with Registration, including filling out the following questions:“CREATE TEAM”
Pay for the registration in full, your team members will pay you back!
If you are Team Member:
Team members are invited to join a team or already have plans of joining an existing relay team. Since your team captain paid for your event in full, you are not charged during registration. Please be sure to pay them back!

CLICK HERE to register for our event.
Select: “Relay – “JOIN A TEAM”
Continue with Registration
Finish and complete the registration. You are now registered on the team and your Team Captain will be receiving an email that you joined.
For further explanation about how to register and/or join a team CLICK HERE.

As a Team Captain:
You’ll get an email every time somebody registers for your team.
You will be responsible for getting individuals registered on time for your team.

As a Team Member:
You must know your team name before signing up.
You are responsible for registering yourself, on time, for your correct team.

Part 2: Race Day
THE BASICS
The relay team usually consists of one swimmer, one biker, and one runner. At our events, we will allow one of the relay members to do two of the “legs,” meaning one person can choose to do two of the three sports and the other team member does one.  Teams can be all male, all female, or mixed gender.  (Unless, of course, it is an all-female race.)

CAN AN INDIVIDUAL RACER BE PART OF A RELAY TEAM?
Yes, they can! If you have trouble finding a person to complete your relay team, we will allow someone competing as an individual to do your first segment or first two segments of the event, then pass off the relay timing device to you. It is important for the individual racer to know that they have to go to the designated relay-team exchange point (as described below) to give their team member the relay timing chip before they proceed with their own individual competition. The most popular example of this is an individual racer “doing the swim leg” for a team.HOW THE RELAY PROCESS IS CONDUCTED ON RACE DAY 

Relay teams will be assigned a race number.
Your team will use your assigned number for all race logistics.
All relay team members need to be body marked with the assigned team number.
The relay team runner must have the race bib number and is required to present this number to pick up the team timing chip and give it to the relay team swimmer on race morning before the start.
There is a sign in the transition area designating the relay “timing chip” hand-off area. All relay chip exchanges will take place by this sign. Please locate the sign before the start of the race.
The swimmer wears the timing chip during the swim. The swimmer will proceed to the relay exchange point and pass the chip to the biker in the exchange area ONLY.
The biker can be fully dressed with helmet and shoes on if they so choose.
The biker proceeds to your assigned bike rack (bike racks are assigned by your race number range),  gets the bike, and exits transition to start the bike portion of the race.
The biker returns to transition and racks the bike in same assigned bike rack location. The biker then proceeds to the relay exchange point and passes the timing chip to the runner. All exchanges of chips take place in this area ONLY to minimize congestion in the transition area.
The runner proceeds out of transition from the relay exchange point with the paper race bib number on the front of their body.
The runner crosses the finish line with the paper race bib number on the front of their body. If desired, the other members of the relay team can join their teammate as she approaches the finish chute and run the last stretch across the finish line with her. Just make sure that only the team member designated to do the running leg is wearing the team bib and timing chip. Please be aware of individual participants and do not block them as they are running towards the finish line!
The timing chip will be collected at that time.
All relay team members receive their own finisher’s medal.

Have an EPIC race!

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