October 23, 2021

If you can't remember if you deferred your spring entry to fall, you can check the list here: fall trail rollovers.pdf

Tackle the Potowatami & Crooked Lake Trails with us as we celebrate 35 years of trail! The course is neither flat nor fast, but it is a beautiful loop with constant hills through Michigan’s Pinckney Recreation Area. A Michigan Recreation Passport is required for entry into the park. A portion of each entry fee will be donated to the John Rogucki Memorial Fund.

Cozy beanie to all entrants. Laser cut steel medals with powder coat and a paracord lanyard, handmade locally by Detroit Metal Works to all finishers.


Marathon, Half Marathon & 50K - 7:30 a.m.

Road Ends 5 Mile - 7:40 a.m.

Please note: ALL Serious Series events take place in Michigan State Parks. A Michigan Recreation Passport is required for every vehicle entering Michigan State Parks!

Please note: The Serious Series is a CUPLESS series. You can learn more about our Zero Waste initiative and going cupless here!

Trail Marathon Weekend Registration

All participants in all distances receive a cozy beanie.

Add on Optional "35 YEARS OF TRAIL" shirt.

Since we have changed the participant swag to a hat we still wanted to give you the option to purchase a unisex baseball race t-shirt for $25. If you would like to add a shirt on to your registration you may do so below! Optional Trail shirt must be added on by October 4, 2021.


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