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Ice Age Trail 50

Quick facts

Distance Ultra marathon

About Ice Age Trail 50

The Ice Age Trail 50 was the first 50-mile ultramarathon in the Midwest. And now, many years later, it stands as one of the oldest, continuously running 50-mile races in the country. The Start/Finish area of the Ice Age Trail races is located at the Nordic Trailhead in the Southern Unit of the Kettle Moraine Forest. While the course tops numerous hills, none of them are extremely long or overly steep in nature, but they are incessant. The terrain consists of mostly single track dirt, rocky and tree rooted trail that runs through pinewoods, hardwood forests, and rolling prairie lands, a little bit of everything. The 50 mile course will be marked with YELLOW ground flags.



  • 80.467km


  • 50km

Half Marathon

  • 21.097km



Most Ice Age campers stay at the Ottawa Lake campgrounds, which is about a 15 minute drive northeast of the Start/Finish.

After Race Services

Post Race BBQ Dinner in the finish area.

Aid Stations

All Ice Age aid stations will be stocked with water, HEED and soda (Coke, Mountain Dew and Ginger Ale).A limited supply of Hammer Gels will also be available, but runners are encouraged to bring their own gels.

Award Medals

All 50 Mile finishers under 12 hours will receive a custom-made, 35th anniversary Ice Age buckle. All runners will receive a finisher’s award if they complete the course in the required time.

Equipment Storage

There are three drop bag sites for the 50-mile race: The Start/Finish (9 miles), Hwy 12 (18 & 26 miles) and Horseriders Camp (37 & 43 miles).

Maximum Time

12 hrs


A Wisconsin State Park parking pass is required to park in the starting area.


Food items vary by aid station, but all will have: PBJ sandwiches, oranges, bananas, cookies, chips, pretzels and candies.


Chip Timing


If the designated parking lots are full, you will have to drive 2.3 miles north on Hwy H to the site of our packet pick-up, Rushing Waters. Shuttle service to the start will be available from there.

Ice Age Trail 50 Route Map

Ice Age Trail 50 Route Map


Kettle Moraine State Forest Nordic Trailhead

La grange,us


The race begins with a 9 mile counterclockwise loop on the blue Nordic Trail, followed by an out-and-back to Rice Lake. At confusion corner, runners proceed north to Emma Carlin. Once there, they reverse direction and follow the Ice Trail back to the finish area. 

The race information has been found on the official website of the event or through publicly available sources. Always refer to the official website the latest race information. Please let us know if any data is wrong or missing, by emailing us.