Marsh Madness is a 32-hour ultra-marathon 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 80s. Access to your vehicle every 8 miles.
8-mile loop during the day. 5-mile loop between the hits of 11 pm and 6 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 1st, 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.
No porta-potties.
We will meet at the race start 30 minutes prior to the race, to sign in.
Aug 07, 2026
Distance — 8 Miles
Type — Running
06:00
$0.00
These values represent the 3-year monthly averages for August in South Rockwood.
Learn more about the host city, South Rockwood.
South Rockwood is a village in Monroe County in the U.S. state of Michigan. The population was 1,587 at the 2020 census. The village is located within Berlin Charter Township.
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