Marsh Madness
- Date Fri 7th August 2026 - Sat 8th August 2026
- Time 6:00AM EDT
- Location South Rockwood, Michigan
- Price Free
- Races 1 race
Event summary
Get ready for an unforgettable running experience at the Marsh Madness ultramarathon, taking place from August 7th to 8th, 2026, in the scenic South Rockwood, Monroe area. This unique 32-hour race takes you along the stunning dikes of the Point Mouillee State Game Area, where the Huron River, Detroit River, and Lake Erie converge, offering breathtaking views across the water to Ontario and Ohio.
With a maximum of 50 runners, participants will tackle alternating loops of 8 miles and a 4.6-mile out-and-back during the day, with a special 4-mile loop running from 11 PM to 4 AM. The course features 80% gravel and 20% asphalt, with a gentle elevation gain of 69 feet per loop, making it accessible yet challenging. Runners can enjoy the camaraderie of crew and pacers, while being fully self-supported in terms of nutrition and hydration. Plus, with no cut-off times and the freedom to pace yourself, Marsh Madness is all about enjoying the journey and soaking in the beautiful surroundings. Don’t miss this opportunity to be part of a truly special event in one of Michigan's premier natural settings!
With a maximum of 50 runners, participants will tackle alternating loops of 8 miles and a 4.6-mile out-and-back during the day, with a special 4-mile loop running from 11 PM to 4 AM. The course features 80% gravel and 20% asphalt, with a gentle elevation gain of 69 feet per loop, making it accessible yet challenging. Runners can enjoy the camaraderie of crew and pacers, while being fully self-supported in terms of nutrition and hydration. Plus, with no cut-off times and the freedom to pace yourself, Marsh Madness is all about enjoying the journey and soaking in the beautiful surroundings. Don’t miss this opportunity to be part of a truly special event in one of Michigan's premier natural settings!
Organiser's Description
Marsh Madness is a 32-hour ultramarathon on August 7th, 2026.
Free fat ass race run on the dikes at Point Mouillee State Game Area, where the Huron River, Detroit River, and Lake Erie converge. Views of Ontario and Ohio across the water await. On the western shores of Lake Erie, Pointe Mouillee State Game Area is one of the most respected waterfowl locations in Michigan. Consisting of 4,040 acres, it is one of the largest freshwater marsh restoration projects in the world. You may see an eagle or a random guy posing with a fish for his Tinder photo.
50 runners max.
You supply all of your own aid and nutrition.
Crew, pacers, and poles welcome.
Elevation gain is 69 feet per loop, 80% gravel, 20% asphalt.
Zero water crossings.
Temps should be in the 80s. Access to your vehicle every 8 miles.
Alternating loops of an 8-mile loop and a 4.6-mile out-and-back during the day. 4-mile loop between the hours of 11 pm and 4 am.
32 hours to complete, with the caveat that we can not run the dike between 11 pm and 6 am. A nighttime course is planned. Start time: 6 am Aug 7th; finish time: 2 pm Aug 8th.
No cut-off times.
It is free, so there are no awards other than the beautiful scenery and the sense of accomplishment.
No garbage cans.
Pack it in, pack it out.
Porta-potties this year on the 4.6-mile out-and-back.
We will meet at the start of the race, 30 minutes before, to sign in.
Free fat ass race run on the dikes at Point Mouillee State Game Area, where the Huron River, Detroit River, and Lake Erie converge. Views of Ontario and Ohio across the water await. On the western shores of Lake Erie, Pointe Mouillee State Game Area is one of the most respected waterfowl locations in Michigan. Consisting of 4,040 acres, it is one of the largest freshwater marsh restoration projects in the world. You may see an eagle or a random guy posing with a fish for his Tinder photo.
50 runners max.
You supply all of your own aid and nutrition.
Crew, pacers, and poles welcome.
Elevation gain is 69 feet per loop, 80% gravel, 20% asphalt.
Zero water crossings.
Temps should be in the 80s. Access to your vehicle every 8 miles.
Alternating loops of an 8-mile loop and a 4.6-mile out-and-back during the day. 4-mile loop between the hours of 11 pm and 4 am.
32 hours to complete, with the caveat that we can not run the dike between 11 pm and 6 am. A nighttime course is planned. Start time: 6 am Aug 7th; finish time: 2 pm Aug 8th.
No cut-off times.
It is free, so there are no awards other than the beautiful scenery and the sense of accomplishment.
No garbage cans.
Pack it in, pack it out.
Porta-potties this year on the 4.6-mile out-and-back.
We will meet at the start of the race, 30 minutes before, to sign in.
Races
-
Marsh Madness
Fri 7th August 2026 (6:00AM EDT)
Free
CLOSED
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South Rockwood, South Rockwood, 48179, MI, United States
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