Annual Dennis Road Race & Walk
- Running
- 8 km
- Walking
- 5 km
First South, Nova Scotia, Canada
Marsh Madness
- Running
- 161 km
South Rockwood, MI 48179, US
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About the Event
Marsh Madness
Fri August 1 - Sat August 2, 2025
South Rockwood, MI 48179 US
Marsh Madness is a 100-mile ultramarathon on August 1st, 2025. This free race takes place on the dikes at Point Mouillee State Game Area, where the Huron River, Detroit River, and Lake Erie converge. Enjoy views of Ontario and Ohio across the water. The course is 100% gravel (mud possible if you fall in the water!), with 10-mile out-and-backs and vehicle access every 10 miles. The race is 32 hours long, with no cutoff times, and participants must supply their own aid and nutrition. No garbage cans, porta-potties, or pets allowed.
Start time: 6:00AM EDT August 1st
Finish time: 2:00PM EDT August 2nd
How to get there
Courses
Tickets
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| Free Ticket | $0.00 | See |
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