Michigan Triathlon Championships

Michigan Triathlon Championships

​​the Michigan Championship event is FOR EVERYONE! Let’s Go!

Rest assured if you want to end the season with a lightning-fast PR, this is the place and race to achieve that. Test yourself against your time from the Motor City Triathlon and see if you improved your performance over the racing season.

With the smell of autumn in the air, most regular users of the island enjoy a more serene setting as the island starts to calm down from the hectic summer. That’s why we chose this venue as a “double” venue, once in early summer and once in late summer; and we will make it one worth doing twice. Come to Downtown Detroit and enjoy a baseball or football game, a beautiful night at the theater, symphony, or museum and stay at one of the 4-star casino’s with great food options. So many great things to see and do with your significant other or family!

MORNING OF REGISTRATION OPEN – 5:30 a.m. Closes promptly at 6:50 a.m. @ T2 Check-In.


Sunday, September 1, 2024

*7:30 a.m.

Belle Isle, Shelter 1
Detroit, MI 48209

*Follow the 3 Disciplines Event Parking signs once on the island

Morning of registration open Sunday 5:30 a.m. – 6:50 a.m. at T-2 Check-In.


  • Olympic Triathlon – 1500m swim, 22.8 mi bike, 10k run
  • Sprint Triathlon – 500m swim, 11.4 mi bike, 5k run
  • Sprint Duathlon – 2k run, 11.4 mi bike, 5k run
  • Olympic Aquabike – 1500m swim, 22.8 mi bike
  • Sprint Aquabike – 500m swim, 11.4mi. bike
  • Super Sprint – 200m swim, 5.7mi. bike, 1mi run

**2 and 3 person relays offered for the Sprint Distance Triathlon

Entry Fees: Ind. Relays: SuperSprint:
Until 2.28 $110 $150 $65
3.1 – 4.30 $125 $150 $65
5.1 to online closes $135 $150 $65

Online Registration

Closes Thursday before the event at midnight

On-site Registration

Race morning 5:30 – 6:45 a.m. at Transition 2 (cash only)

Refund Policy: NO REFUNDS for any reason unless you have been double charged or accidentally signed up more than once, military transfer or death in the family.

Standard event industry policy: states that when emergency conditions such as weather, threats of terrorism, medical emergencies, or any potentially unsafe condition out of our control force cancellation of an event, refunds cannot and will not be provided since funds have been spent on race day already.

Athlete Amenities: Guaranteed to those pre-registered 14 days out!

  • Custom event shirt
  • Custom finishers medal
  • Professional chip timing with results available online
  • Awards to top three in each age group
  • Post race snack table

Proceed to the grass lot

Follow all signs for parking. Absolutely DO NOT park where NO Parking signs are posted! Please do not move cones and there is NO Parking on Picnic Way, that is the run course!

Visit Detroit

List of Free things to do & see in Detroit

A short 20 minute drive from the event venue on Belle Isle will get you to Windsor, Ontario, Canada.

Visit Windsor

Attractions downtown Windsor

Campgrounds around Detroit


DNR – Darlisa and all the DNR Staff on Belle Isle

Michigan Coast Guard

Hart EMS



Pepsi Co

Gatorade Endurance

Support Crews

Wayne State University Cross Country / Track Team

Our exclusive TRI – One program was launched many years ago when athletes raced as part of their training, rewarded themselves for all the training they were doing and to gain all that important race day experience you cannot simulate. As the multi-sport community has evolved to the opposite now we are bringing back the program. It is really simple, you need more open water swim training? Great, cmon out and get it with our lifeguards and courses. Want to get a nice hard time trial on the bike in? Cmon out and race on our course. Need to get a run in and want to do so with aid stations? Cmon out and join other runners.

Each TRI – One will have a designated start time, you will simply head to the TRI – One start flag for the discipline you choose, line up, and when the clock strikes and the horn sounds you are off. With our events, time trial swim starts now you will line up accordingly. Or if you want to take the Kayak or SUP out for a nice paddle with others where offered.

The cost for these is a flat $30. For that, you get a finisher’s medal and access to the post-race food tent. You may purchase a shirt for $10.

You can register online or onsite. If onsite it is cash only!


The swim course has worked really well with the MI Championships in the past, so that will be unchanged.

The bike is lightning fast – arguably one of the fastest courses in the country – as you get the wind either on the Canada side or U.S. side of the island which enables you to reach speeds over 30 mph. It is closed to traffic with coned lanes around the entire island. The difference will be you will enter after completing your laps on the East side of the island at the fountain way drive. This will be indicated by a bike-in structure.

The run course is flat as well and the will loop take you around the south end of the island, past the great fountain and up and down pit row. Two loops for olympic distance athletes.


TRIATHLETES: RUN GEAR ONLY at T-2! Swim and Bike gear at T-1.

DUATHLETES ONLY: You must keep your bike gear at T-2

This event will have two transition areas because the beach is one mile from the finish line, parking area, and T-2 located at Shelter #1. PLEASE park at T-2/finish line, on Central. Then go set your running gear and ride your bike to T-1. Again PLEASE DO NOT drive down to the swim start, T-1. We will transfer your gear from T-1 to T-2. So when you finish it will be ready for your pick up. It is YOUR responsibility to label your equipment bag with your name and RACE #. We are absolutely NOT responsible for any lost items. Do not put valuables, keys, etc, in your gear bags for transport back to T-2. TIP: Use a bright colored bag that sticks out. There are 500 plus other gear bags at pick up.

Again, it is YOUR responsibility to bring a gear bag and mark it with YOUR RACE # and name. We will not be providing bags. Anything not put in a bag will be put in a general pile.

CHIP PICKUP will be at T-2 and Body Marking will be at T-1 near the RUN IN CHUTE.

Repeat, CHIP PICK-UP will be at T-2 (shelter #1, finish line, registration area).

Transition area #2 will be on the large cement pad in front of Shelter 1. When arriving on the island follow signs and support crew. Again you must park here, place your RUN gear in transition, receive your timing chip and strap, place that on your ankle immediately and head to T-1 with the rest of your race gear. (Race Management will not be responsible for any unbagged or unclaimed race gear; please make sure your bags are marked).

Following the last athlete exiting T-1, all gear bags will be taken to the finish gear bag claim area at T-2 just past the finish line along the transition area. You must have your race number to claim your gear bag. Sprint athletes, please give support crew time to sort and organize bags. To expedite loading trucks with bags, athletes should carry their own bag out of transition and toss it in the pile at exit.

Opens – 5:30 am

No friends or family members allowed in the transition area for any reason. The race director and race officials will close the transition area 30-45 minutes before race start to ensure all athletes are at the starting area for mandatory course meeting and announcements. Once the transition area is closed, you will NOT be permitted back in before the race starts. Family/Friends will not be permitted in for any reason at any time throughout the event.


When the last cyclist is off the course and has headed out for the run. This time is variable and we will make announcements at the event when the transition area is ready to re-open.

Any athletes removing gear from transition areas before the announcer or race director has officially opened the transition area will be DISQUALIFIED from the race! This pertains to all athletes of all distances. All athletes deserve a clear transition.

In the event of inclement weather, it is recommended you have warm, dry clothing outside the transition area to put on following your finish due to other athletes still being on the bike course.

Timing Chip

When you have completed the race, please do NOT enter the transition area wearing your timing chip. PLEASE remove your chip before re-entering the transition area and exiting again. This will cause a timing error.


You must rack according to your race number, based on the sequence numbers placed at the end of each row. Please remember racks will hold 7 bikes racked with the seat tip on support bar. Please be courteous to fellow athletes to ensure there is space for 7 bikes on a rack. If there is not enough room for your bike on your designated rack, please see a 3D Team member and we will help. Please do not move another athletes bike or gear.

Aid Station

Located at the run in/out chute with water and electrolyte replacement.


Run In/Out and Bike In/Out chutes are clearly marked on the large structures at either end. It is your responsibility to go the right direction while racing in the transition area.

The swim begins at Belle Isle Beach, on the Detroit River at the edge of Lake St. Clair.

New for all events will be a Time Trial swim start. For safety reasons it is important we ensure we are doing all we can to alleviate stress at the start and turning at buoys. A time trial start ensures everyone has a clear, stress-free swim. You will SELF SEED according to your 500m swim time. (THIS IS YOUR ACTUAL swim time, not what you THINK you will swim, or want to swim). This is important to ensure you are not swam over or create congestion by seeding yourself faster than you can swim. Don’t be that athlete that creates a traffic jam. Seed yourself appropriately and everyone will have a great time in the water.

Each athlete will report their number to the timer before crossing the timing mats and entering the water. Again your responsibility to report that number to the timer.

Time trial starts: Long course athletes first, followed about 30 minutes later with Sprint, then 20 minutes later Super Sprint athletes.

Contrary to popular belief, this is some of the cleanest tested water in the entire state because of the current. There is a constant “flush” here with currents of 7 plus mph. You swim in crystal clear water with the modified triangle swim. We keep you right on the edge of the current, so you will have a pretty fast swim, but the key is to navigate that final turn heading to shore.

Water temp has typically been between 65 and 72.

Wetsuits will be allowed.

Exiting Transition 1 at the beach, you merge into the inside lane which is coned all the way around the island. As you pass the Transition 2 with each lap you will see the “OFF RAMP” you will take when you have completed your 1, 2 or 4 laps of the island. There are no turns, you simply use the bike lane or inside car lane all the way around the island.

Super Sprint athletes will complete 1 full lap with an additional mile to get back down to Transition 2 at the Casino/Finish/Registration area.

Sprint athletes and Duathletes will complete 2 full laps with an additional mile to get back down to Transition 2 at the Casino/Finish/Registration area.

Olympic Distance athletes will complete 4 full laps with an additional mile to get back down to Transition 2 at the Finish/Registration area.

Slower athletes PLEASE STAY ALONG THE CURB ON THE INSIDE OF THE ISLAND; faster athletes will stay along the cones, outside of the island.

You will enter after completing 2 or 4 complete loops of the island at Fountain Way, under the bike in structure, and proceed to T-2.

Exiting Transition 2 at the back side to straight across into pitway, then straight to the south end of the island, around, then a LEFT to the great fountain, around and backup pitway. Then over to the casino, across the bridge and back towards the venue. You will see the finish line and hear the music at this point before running up the walkpath to a down and back, before heading out to central for about a 400m straight jet to the finish line.

For Olympic Distance athletes, you will simply run past the finish chute and back out for lap 2.

Aid stations: Located at every mile with iced water, lemon-lime Gatorade Endurance Formula.

You will start with your specific swim wave. Check the information cube at the event for wave start information.

You will complete the Swim and Bike disciplines of the event. Following your Bike discipline, you will dismount your bike, cross the Bike In timing mats and place your bike back at your spot on the rack in the Transition Area. You will then proceed across the Run Out timing mats and you are done! Your finish time will be when you cross the timing mats at that point.

DO NOT re-enter the transition area through Run In/Out or Bike In/Out. This will cause a timing error.

Finisher Memento

If the event offers a finisher’s memento, please proceed to the finish area to receive the item. Tell the support crew at the finish line you were in the aquabike race and they will hand you the finishers memento.

You will keep your timing chip & strap on until all the bikes are off the course. Once we announce the transition is open, you may turn your chip & strap in at the designated collection point and retrieve your gear at that point.

One of the first to launch the Super Sprint back in 2014, the goal with it was to provide an intro to Triathlon. No matter your age, 6 yrs to 80+ yrs. the final wave of the day to start gets you out of the chaos of the start, and keeps you with like-minded athletes. A perfect introductory distance that we try to keep non-competitive with no awards, but of course, everyone gets a finisher medal. Come on out and Try your first TRI. Questions, don’t hesitate, any question is a good question!

200m swim – your swim will always start following the final sprint athlete in every super sprint event. These will be an out to the first buoy, over and in.

10k bike – will be an out and back. Following all signs indicating SUPER

1 mile run – will be an out and back as well. Following all signs indicating SUPER

Starting with a 2.5k run. FIRST and Most Important: this is a 2 transition event, so you MUST leave your BIKE GEAR and 2nd Run Gear at TRANSITION 2 (finish line, checkin area) not at the beach!!

You will start at the Duathlon start flag across the street from the beach and Transition 1 on the corner. About 5-10 minutes before your start announcements will be made to report to the start flag where the Run Course coordinator will be waiting to give you further instructions. He/She will lead out the first run, which will take you back down to Transition 2, where you will head into transition and out on the bike course. You will complete 2 loops of the island before heading back into Transition 2 again, where you will grab your run gear for the final 5k.

Again, make sure you leave your bike and run #2 gear at the finish / Transition 2. Do not take it down to the beach. Then report to the start at the beach by 7:00 a.m.



Closes the Thursday before the event at 11:59 pm


5:30 am – 6:45 am ONLY (do not arrive late)!

Please allow time to check-in and to make it down to T-1.

Please follow the directions in your athlete emails sent the week leading up to the event. Follow the signs to transition/check-in.

Olympic, Sprint (Triathlon and Aquabike), Duathlon

  • $110 through 2/28/2024
  • $125 March 1, 2024 – April 30, 2024
  • $135 May 1, 2024 – online registration close (August 28, 2024)

Olympic and Sprint Relays

  • $150 through online registration close (August 28, 2024)

Super Sprint Triathlon

  • $65 through online registration close (August 28, 2024)

Items to bring to check-in

  • * Drivers license or picture ID
  • * Helpful to bring a printout of your registration confirmation
  • You will not be permitted to race without a picture ID.

Items you will receive at check-in

  • * Bib number
  • * Swim Cap (required to wear during the swim)
  • * Timing Strap
  • * Partner supplied samples

Checking in another athlete

Each athlete must pick up their own packet. You may not check-in for another athlete.

Exceptions: A parent or guardian may pick up for their child.

Note: Participants 17 and under must be accompanied by a parent or legal guardian to sign event waivers.

Bib Number

At registration you will receive ONE bib number that the runner must wear on the front of their chest, since they will be crossing the finish line.

Body Marking

All relay members will get body marked with the bib number assigned to them, so they can all be identified on the course.

Timing Chip and Strap

The athlete competing in the first discipline should securely attach the timing chip to their left ankle. The chip and strap should be handed off to the next relay member inside the Transition Area ONLY at the designated RELAY area. Each athlete should only wear the chip on the left ankle, never on the wrist. Do not just grab it and go. You must make sure it is secure on your ankle before leaving the Transition Area. Exchanging outside of the Transition Area could result in a disqualification.

Transition Area

There will be a designated rack(s) for RELAYS only. This is typically near one of the exit/entry points. Please make sure all relay member’s gear is in this designated area. Even when the Transition Area is closed, relay members may still have access to the Transition Area to warm up and prepare for their discipline.

Each athlete will be assigned a timing chip and strap. These will be available race morning unless otherwise stipulated in your race confirmation. After check-in, proceed into transition and your bag will be at your spot on the rack. Please ensure your bib number and timing strap match.

You are responsible for this chip and strap. Failure to turn it in for ANY reason will result in a $40 charge.

You must wear your chip and strap on your left ankle for the entire event, start to finish.

Following your finish you will be directed down the finish chute where there will be a chair and two bins with disinfectant solution for your chip/strap. Please remove your chip/strap, RE-VELCRO it and toss into the bin.

We provide all the timing and scoring services for each and every event we host. This will be with ChampionChip or ChronoTrack timing systems.

Throughout the course, there will be sets of timing mats or gators, typically under structures, indicating finish, bike in, run out, swim finish, etc. You must cross over these areas. Do NOT avoid them or attempt to jump over them.

Every effort will be made to supply you with a swim, bike, run, transition 1, transition 2, and finish times. However, it is explicitly expressed that the electronic timing systems are not foolproof. They are electronics and computers which are outside in the elements and they are not perfect systems. We along with any other timer out there can only score what is captured in a system.

Preliminary Results

This event will be scored live with ChronoTrack. You may track your finish via the Athlinks app or the ChronoTrack Live app. Search by event. There will be QR codes at the event for you to scan.

Your results will be posted on the event website under the RESULTS tab located on the home page as well as event page. Every effort is made to post these by the following morning or within 24 hours of the event.

ANY and ALL timing questions and inquiries must be sent to:

Emailing or contacting event management in any other way will not guarantee an attempt to retrieve results.

All athletes and all relay members will be body marked with their race number. After picking up your chip and strap please proceed to the body marking area typically designated with a large BODY MARKING flag. You must have your bib number for this process.


Both your biceps will be marked with your bib number, going down, not across

Your RIGHT calf will be marked with your age (as of 12/31/2024)

Your LEFT calf will be marked with the event you are participating in

  • T – Olympic Distance or Long Distance
  • S – Sprint Distance
  • SS – Super Sprint
  • D – Duathlon

* RELAYS – an R will be placed in front of the distance code you signed up for

* AQUABIKE – an A will be placed in front of the distance code you signed up for

Due to an increasing amount of athletes entering events they may not be properly trained for, we are asking each athlete to be responsible and honest with his/her ability to complete the distance registering for. Due to safety concerns for everyone involved including you the athlete, but also the support crew volunteers and officials like police, sheriff, fire department, etc. we must instill course cut off times at 4 hrs. Raffle and awards start at 3 hrs and 30 minutes in Olympic distance events and 99% of all athletes are finished by that time. So you must register for the event you will finish under that 4 hour time limit. Being a responsible athlete means if you cannot complete the Olympic distance comfortably under that time we recommend you participate in the sprint event. We encourage you to train for the goal to reach that Olympic distance under the 4 hour time limit. If you do not have a clear idea as to how to achieve that goal we are here to help, please let us know.

An athlete will be informed he/she has reached the 4 hr. cut off, at which time the athlete will acknowledge he/she understands completely and he/she will be brought in off the course by the course coordinator. If the athlete refuses this he/she will be informed that there will not be any support left on the course from that point and he/she must acknowledge this and understand he/she is continuing under those circumstances at which time the athlete will remove the timing chip/strap and give to the course coordinator.

Again an athlete must take the responsibility on as an athlete understanding his/her ability at the time of the event. Knowing that support crew volunteers, as well as other personnel out on courses must be kept in safe conditions as well.

Age Up Rule

Your age on race day is the same as how old you will be on December 31 of that year.


Top 3 Men and Top 3 Women Overall in each event and excluded from their age group.

Age Groups

Top 3 Men and Top 3 Women within each of the following age groups:

19 and under, 20-24, 25-29, 30-34, 35-39,40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, 80+

*In the event there may not be at least 4 athletes within an age group, an age group may be combined, for example 2 in 20-24 and 2 and 25-29 = 20-29 age group combined.

  • *Sprint Triathlon – Typically offers 15 and under and 16-19 in addition.
  • *Clydesdales (Male 225 lbs or more) -1st Overall in Olympic and Sprint Distance Triathlons.
  • *Athenas (Female 165 lbs or more) -1st Overall in Olympic and Sprint Distance Triathlons.

Aquabike: Top 3 Men and Top 3 Women in Olympic and Sprint Distance Aquabike.

Sprint Duathlon: Top 3 Men and Top 3 Women.

Super Sprint – All athletes will receive a finisher medal when crossing the finish line. This category is designed for those wanting to Try the Tri or to enjoy a fun, family-friendly race. In that spirit, no awards are presented. Everyone is a winner!

Awards will in NO circumstances be given out early, or individually before the awards ceremony. If you must depart before the awards ceremony, you may opt to pay a shipping and processing fee and have the award mailed to you. Please click on the link below to be taken to the Transition Bag Store where you can select the AWARD Item.



Wetsuits are available for rent. Please rent by TUESDAY before the event. If you are interested in renting a wetsuit we have shortie, sleeveless, and full wetsuits. Please email with your name, size, and type of wetsuit. It is $50 cash paid onsite. You will be responsible for any and all damage to the wetsuit, a credit card will be put on file for potential damages. You will pick up your wetsuit at the wetsuit check-in transition check-in race morning. You will drop your wetsuit off at the post-race food tent with a 3Disciplines TEAM member ONLY, NOT a volunteer. He/She will inspect the wetsuit and check you out by returning your credit card. Again please email by Tuesday before the event to reserve your size and style.


In our efforts to keep every race safe and fair, there are specific rules we have adopted and in some cases modified to ensure you and your families safety, as well as making the events fair for everyone.

1. Yelling at or using profanities in any way shape or form towards 3D staff or support crew will not be tolerated and will result in automatic disqualification and could result in a suspension from events.

2. Wetsuits will not be allowed in water above 80 degrees.

3. The filming of an athlete on a course will result in a disqualification.

4. Pacing will not be questioned. You cannot follow or be followed by a fellow athlete, friend, or family member at any time on the course by any means. This will be deemed pacing and therefore will result in disqualification.

5. Changing swim/start waves or switching events without informing event management BEFORE an event begins will result in disqualification.

6. Adjusting or moving another athletes gear in the transition area when their gear was placed first will result in a 5:00 minute penalty.

7. Throwing trash on the course at any time before, during, or after will result in a 5:00 minute penalty for the first offense and disqualification on the second. Designated trash throwing areas are only at aid station spots and approximately 25m before and after.

8. Failure to comply with emergency vehicles and event management staff during an event will result in automatic disqualification. Emergency vehicles and personnel have the right away at all times and an athlete must give them that right away by doing everything possible to get out of the way.

Event management reserves the right to postpone, change format, modify courses, or cancel the event at any time. The safety of athletes, staff, support crew and officials is our top priority and will never be compromised.

Event management is not responsible for late arrivals, athletes not finding a venue, misdirected, or delays for any reason. Late arrivals will NOT be issued a chip and strap and you will not be allowed in the transition area once it is closed. Again, there will be NO refunds for any reason.

Inclement Weather:

Event management reserves the right to cancel an event due to inclement weather or the POTENTIAL of inclement weather. Every attempt will be made to host an event whether in its advertised form or altered form. Meaning a triathlon could be modified to a duathlon. A 1500m swim could be made a 500m swim, etc. A half marathon run could be made a 5k run, etc. Under any circumstance, a refund or transfer will not be issued. Athletes’ safety will not be compromised.

If an event has mandatory bike check-in, you must check in your bike during the allotted check-in times typically the day before. Failure to do so will mean you are not going to race and again no refunds will be given.

These rules are in place for a reason and deviation from them is not fair to the hundreds of athletes that follow the rules.

First-time event, Athlete Experience:

Athletes participating in his/her first “long course” event will result in an interview with the onsite race director. His/her experience will be considered in a personal interview with the race director on-site if a question of ability to safely finish is at stake. Failure to comply with the race director’s decision will result in a disqualification if there is an unwillingness on an athlete’s part to change events. Safety will NOT be compromised under any circumstances.

Age participation rules:

Kids 17 and under may NOT compete in half-ironman distance events.

Kids must be 10 yrs. of age to compete in adult sprint events.

The race director will have the final say for anyone racing at any event.

A lost chip will be billed directly to the athlete for a $40 fee and may result in no time for the event. It is in no way event management’s responsibility to post a time for an athlete who has lost his/her chip during an event. It is his/her responsibility to ensure that chip is on at all times.

An un-paid bounced check will mean you will be put on the “banned” list. Not a great list to be on if you plan on racing in the future. If you made a mistake with your banking, we understand, but just be sure we are paid after corrections are made.

A t-shirt is only guaranteed if the athlete registered by the 14 day cut-off for pre-registration.

3D has a “lost and found” bin. If you have lost something during a race, please contact us at:


All race fees are non-refundable. No refunds are allowed.

Transfer to Another Race

Transfers to another 3 Disciplines owned event are allowed. All transfers must be completed two weeks prior to the event in which you are registered or the event you would like to transfer to whichever is sooner. The transfer fee is $15.00 plus any potential difference in race fee.

Events that do not fall under our transfer policy include: I Tri for Mac.

Transfers may be made within the current race season only.

Transfer to Another Distance

You may switch between the Olympic and Sprint distances at any event. Please contact us at to change your distance or you may do so at registration at the event. No fee to change distance.

Course Map

Click here for the interactive SWIM course map:


Click here for the interactive BIKE course map:


Click here for the interactive RUN course map: