The Glacial Trail 50 is Wisconsin's fall ultra, held in the Northern Kettle Moraine State Forest.  Starting in Greenbush, runners will take a connector trail from town out to the Ice Age Trail, which comprises most of the course.  Hopefully fall colors will be at their peak!

2024 Results         2024 Photos (by Jeff Weiss)

Questions, or want to volunteer to help?  Please contact me:
Date:  Sunday October 12th, 2025

Place:  Greenbush Town Hall / Fire Station
             N6644 Sugarbush Road
             Greenbush, WI  53023
GPS Coordinates

Start Times:
50 Mile - 6:00 am
50K - 7:00 am

Packet Pickup: Begins 5:00 AM at the start, day of the race.

Course:  The course is out and back for both races, primarily on the Ice Age Trail.

Aid Stations: You must check-in at each aid station; please make sure we get your number!  The AS will be stocked with HEED, water, and food. Stations are spaced from four to eight miles apart. One-drop bag station - (50K 13.3 & 17.7) (50 mile 13.3 & 36.7). NOTE: We are a cupless event!  Runners will be responsible for carrying their own container (bottle, vest, reusable cup, etc.) to refill along the way.  If you do not already have a reusable cup, we will provide you with one at check-in, courtesy of Hammer Nutrition!  Thanks for your help in reducing the trash generated by the race.

Pacing/Crewing:
Pacing (being accompanied on the course by someone not entered in the race) is not allowed.  Crews may assist runners at the aid station locations.  Providing aid outside of aid stations (for example at road crossings), or stashing supplies along the course, is not allowed.

Time Limit:
50 Mile - 12 hours (6:00 pm)
50K - 10 hours (5:00 pm)

Perks:  Your choice of Sweatshirt or Blanket; food and beverages for all entrants after the race.

Lodging:  The closest hotels (and stores, restaurants, etc.) are located in Plymouth, about 7 miles east of Greenbush:
AmericInn (920-449-1513)
Plymouth Inn (920-893-5623)
Baymont (920-449-1598)

Camping is available in the Kettle Moraine State Forest.

Awards: 
50 Mile - Top 5 male/female, then Master (40-49), Senior Master (50-59), Grand Master (60+)
50 K - Top 10 male/female, then Master (40-49), Senior Master (50-59), Grand Master (60-69), &             Ultra Master (70+)
Custom medal for 50M finishers, custom medallion for 50K finishers.


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