Location
South Rockwood, MI
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 betw
Marsh Madness 2026 — South Rockwood, MI
Race day is approaching. Hotels fill up fast.
--Days
:
--Hours
:
--Mins
:
--Secs
Race weekend dates pre-loaded on Booking.com. RaceHotelFinder may earn a commission at no extra cost to you.
Race Travel Insurance
Don't forget travel insurance for August 7.
You've trained for months and booked a trip to South Rockwood, MI.
A pre-race injury, a delayed flight, or a family emergency can derail the whole thing.
Travel insurance can help cover your race entry fee, hotel, and flights if you can't make it,
and may cover medical costs if something goes wrong on the course. Plans typically only run
5-7% of your total trip cost — and running events are covered under standard plans with no
additional coverage needed.
- Trip cancellation up to 100% of prepaid costs
- Running events covered under standard plans — no add-ons needed
- Trip interruption up to 150% of non-refundable costs
- Emergency medical up to $250,000
- Cancel For Any Reason add-on available
- 24/7 real-time support
Affiliate links — we may earn a commission at no cost to you.
Coverage terms vary by state and plan. Review policy details before purchase.
More Races
Browse all upcoming races in Michigan →
More Trail Running events with hotel options →
Other upcoming races in Michigan
Bay City Memorial Run Events 2026 2026 — Bay City, MIBay City, MIMay 21, 2026From $10.00
Bayshore Marathon, Half Marathon, 10K, & Kids Fun Run 2026 — Traverse City, MITraverse City, MIMay 22, 2026From $0.00
Mrs. House’s Kick Off to Summer 2026 — Bath, MIBath, MIMay 22, 2026From $0.00
Ride the Keweenaw 2026 — Copper Harbor, MICopper Harbor, MIMay 22, 2026From $0.00
