Outboard Marathon Nationals Race
TOMORC Outboard Marathon Nationals
Racing the Inland Waterway in Northern Michigan August 9-10, 2025
Saturday’s Course
- Approximately 42 miles, modified Lemans start from pits out 1/2 mile to turn buoy and then back into Indian River.
- Race runs through Indian River then along the West side of Mullett Lake and entering Cheboygan River and running its full length to a turn around buoy in Cheboygan.
- The course then follows the same route back to a finish line at Devoe Beach in Indian River.
Sunday’s Course
- Approximately 42 miles, modified Lemans start from pits across Burt Lake and then North to entrance of Crooked River.
- Course runs through Crooked River and into and around Crooked Lake making 3 check points and then back into Crooked River.
- Course then continues South along the West side of Burt Lake then across the lake into the Indian River.
- The race travels the full length of Indian River to a check point at Mullett Lake and then back through Indian River to the finish line at Devoe Beach.
View 2025 BrochureJoin the Club
Results & Champs
We celebrate past Top O’ Michigan Outboard Racing Club winners and participants! Marathon racing is a way of life!
Event Sponsors
The Top O’ Michigan Outboard Racing Club would like to thank everyone who helps in making this race successful every year!
Join & Volunteer
Become an active member of the Top O’ Michigan Outboard Racing Club or volunteer for this year's race - we'd love to have you!
Top O’ Michigan Marathon Nationals
VIC-TO-RY, noun:
“an act of defeating Mullet Lake, Devils Elbow and Cheboygan stump fields on the second full weekend in August each year”
Top O’ participants achieve to master the Inland Waterway against odds or difficulties. These difficulties entail 5-6′ rollers on any given lake on a rough day, pleasure boat wake, right-hand turns, not running out of fuel, must-make buoys and so much more.
The success of completing the two-day race is each racer’s goal and the ultimate victory!
