Sun August 9, 2020 Saint Ignace, MI 49781 US Directions
Whether you are looking for a challenging race or an awe-inspiring swim, this is the event for you.
The Mighty Mac Swim is THE Mac Daddy of 'Em All.

Mighty Mac Swim

7:00AM EDT - 11:00AM EDT
2020 Mighty Mac Swim Cancelled due to COVID-19

CANCELLED:  The Mighty Mac Swim deeply regrets that the COVID-19 pandemic has forced us to cancel this epic swim planned for August 9, 2020.  You may read the official press release here ...

Please know that while government restrictions led to cancelling the swim, your safety has always been first and foremost in our decision-making process.  

While it breaks our hearts to have been forced into cancelling the Mighty Mac Swim, it is our intention to come out on the other side of this crisis with you, together stronger than ever. 

Please save the date of August 8, 2021 and join us for the next Mighty Mac Swim!  Please also mark October 1, 2020 on your calendar as our tentative date for the opening of public registration. 

Swimmers who were registered for 2020 will be given 48-hour priority registration status and waitlisted swimmers may sign up 24 hours before the public.  Those not already registered or waitlisted who are interested in participating in the 2021 Mighty Mac Swim are encouraged to join the waitlist now.

We look forward to bumping fins with you in the 2021 event!  


Here Are Your Options:

The Mighty Mac Swim deeply regrets that the COVID-19 pandemic has forced us to cancel this epic swim planned for August 9, 2020.  We are making refunds available.   

Please consider generously contributing your refund to the Mighty Mac Swim (which will hopefully also support charity).  

Despite not making money in 2020, we still plan to forge ahead and bring the swim back in 2021.  Going forward, we will be working with a growing deficit until registration opens in October.  If registration gets pushed back due to the effects of COVID-19, we will survive for as long as we can.   

If you help us cover our projected deficit, providing relative assurance we will survive for 2021, we will contribute all excess funds as tax-deductible donations to food banks assisting in COVID-19 relief efforts on both sides of the Straits.  If we realize the goal of contributing to charity, all donating swimmers will receive tax receipts for the portions going to St. Ignace Hope and the Straits Area Food Pantry. 

Thank you for supporting the Mighty Mac Swim and the Straits of Mackinac area today, so we can continue to share these great adventures with you tomorrow!

The Mighty Mac Swim deeply regrets that the COVID-19 pandemic has forced us to cancel this epic swim planned for August 9, 2020.   

You may ask for a refund.  We ask you to please do so if you are experiencing financial hardship during these troubled times.  You are our #1 priority.  

The Mighty Mac Swim will create refunds for all 400 swimmers, committing all the available funds we can, which includes all monies not already spent (from which we willingly sacrifice our annual profit margin), and all monies we are able to get refunded to us.  We do not feel it is right to profit from a race cancelled two months in advance under these circumstances.  

We are working on determining what our vendors will be able to refund us, and we will in turn refund as much as we can per swimmer from available funds.

Refunds will be issued ASAP after the 11:59 PM, MAY 26TH deadline for swimmer responses.  

Star Line Mackinac Island Ferry Dock #2 (freight)
99 N. State Street
Saint Ignace, MI US 49781

The Mighty Mac Swim is an epic 4-mile swim across the beautiful Straits of Mackinac between Michigan’s upper and lower peninsulas, alongside the iconic Mackinac Bridge.  This celebrated annual event is both challenging and awe-inspiring!

Internationally sanctioned by the World Open Water Swimming Association (WOWSA) and a member of the Global Swim Series (GSS), the Mighty Mac Swim has been placed prominently on the world stage.

The Mighty Mac swim is held as a competition, but whether or not you wish to race, everyone who makes it across the Straits of Mackinac is indeed a champion!  Make no mistake, this is a “bucket-list” experience! 


Swimmers at the top of the waitlist will be notified of open 2020 entries and will be given 24 hours to respond. The respondent highest on the waitlist will receive the open entry.

Non-respondents will be notified by email that they are out of the running for a 2020 roster position but will be reinstated if they notify the race that they wish to remain on the waitlist. Those removed from the waitlist will still get 24-hour priority registration status for 2021 (see below).


2020 swimmers who wish to return in 2021, will be given 48 hours of priority registration status before 2021 registration opens to the public on October 1, 2020.  

Swimmers remaining on or joining the waitlist following the 2020 race will be given 24 hours of priority registration status before 2021 registration opens to the public. Waitlist for 2021 registration closes on September 15, 2020.

Waitlisted swimmers who serve as a 2020 event volunteer will be bumped up to 48-hour priority registration status with the returning 2020 swimmers, all but guaranteeing them a 2021 entry.  See “Volunteering & Waitlisted Swimmer Incentive” on the website home page ( 

All registrations are accepted on a first-come-first-served basis.

Race Contact Info

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