The Course

The course is run mainly on the Ice Age Trail. The exceptions are for a very limited amount of time on both the north and south out and backs and during road crossings. This is a winter endurance event. All participants acknowledge that the winter elements in Wisconsin can be unforgiving. Plan. Plan. Plan. And plan some more. *Note: the Garmin route is underestimating the mileage. Total miles are closer to 63.5. Please keep this in mind on race day and while training.

About the Ice Age Trail
More than 12,000 years ago, an immense flow of glacial ice sculpted a landscape of remarkable beauty across Wisconsin. As the glacier retreated, it left behind a variety of unique landscape features. These glacial remnants are now considered among the world’s finest examples of how continental glaciation sculpts our planet.

The Ice Age National Scenic Trail is a thousand-mile footpath that highlights these landscape features as it travels through some of the state’s most beautiful natural areas. The Trail is entirely within Wisconsin and is one of only eleven National Scenic Trails.

But the Ice Age Trail is more than a path through the woods. It is a place for mental and physical rejuvenation, a place to unwind after a hard day and enjoy the landscape of Wisconsin. More than 2.3 million people use the Ice Age Trail each year to hike and snowshoe, to backpack, to disconnect and reconnect.

Behind the scenes, a vibrant community of volunteers across the state work to build and maintain the Trail, making it one of the country’s best hiking experiences.

Course Rules

1.) Live by the rules of the trail. Keep to the right when coming up to a hiker, runner, individual. Give the faster individuals the right of way.
2.) NO LITTERING! Anyone caught littering will be disqualified from the event and future events. Leave no trace, only footprints.
3.) Runners will yield when making road crossings and will cross in a safe manner.
4.) Crew can support runners at all aid stations along the route. Pacers are allowed to join their runner at the nearest aid station after dark (4:36pm on event day). This change in 2024 supports the safety of all runners on the course. Pacers must have a pacer bib and will be accounted for at all times.
5.) Crew must obey all parking signs at the start/finish and aid stations. Any crew caught not following the rules will result in their runner be disqualified.
6.) Basic first aid kits are at each aid station. We deem the right to pull any runner for medical reasons, at any time.
7.) If you cut the course, you must back track to the point you cut off and complete the intended course in full.
8.) You and your crew are responsible for knowing the racecourse rules.
9.) Participants are expected to carry their own items or use the items available at the aid stations. No muling for other races or from your pacer.
10. There is a required gear list for 2025.
11.)*NEW for 2025* There will be NO course markings in 2025. Aid station markings will stay but along the Ice Age Trail there will be zero (0) markings. This in particular came about due to the massive snow in 2024. The snow hid markings and as it melted it exposed flags that had not been picked up. This is not being a good steward to the Ice Age Trail and our environment. We strive to leave no trace and with that in mind we have decided to drastically reduce our potential footprint by not putting out course markings.

Gear List

The following items are required for the 2025 event. These will need to be with you at check-in. You will be required to present these items before receiving your bib.

Winter weather Bivy
Head lamp for night running (must be carried during race)
Insulated water container
Winter gloves and hat
Navigation device (including but not limited to paper map, gps, cellphone)

Aid Stations

Start/finish Aid Station and drop bag location

Miles: 0, 45 (cutoff 4am), 64

Butler Lake

Miles: 7.5, 38

Greenbrush

Miles: 15.5, 30

Highway P (turn around) - cutoff 8pm

Mile: 23

Highway H (turn around)

Mile: 54.5

Athlete crew will have access to all aid stations on the course. Athletes are allowed access to their crew at designated aid stations. A pacer is still allowed after you make it back to Mauthe Lake for the second out and back.

*All aid stations will have access to a fire for your warmth and comfort. Don’t stay too long or you’ll never leave. Each aid station will include water and a hydration product, limited sandwiches, and all of your ultra candy affairs. The start/finish aid station will have some extra fare including warm sandwiches with an extra special touch. Warm soup will be waiting for each runner at the start/finish area no matter if you run one mile or finish the race.


We're excited to announce Hammer Nutrition as a sponsor for this year's Frigid Fox Ultra Trek

Hammer has been supplying athletes with natural products free of added sugars, artificial colors, flavors, chemicals, and preservatives for over 35 years. Visit their site to learn how to fuel smart, so come race day, you’re ready to perform at your best!
https://hammernutrition.com/blogs/getting-started

If you'd like to train with the product that will be on course, Hammer's USA-based nutrition reps are happy to answer your questions and find the perfect product for your needs.

Take a look at how Hammer Nutrition provides you energy, endurance, and recovery with their fuels, supplements, and recovery products here.

Start Time and Cutoffs

This is Wisconsin in January and we’ve tried to allow time in this unforgiving environment. But be warned. Finisher rate will be seriously low due to the weather. Plan. Plan. Plan.

The race will begin at 9am Saturday.

Cutoffs
There is an overall race cutoff of 24 hours. There are two hard cutoffs for runners to hit. The Highway P cutoff will be 8pm. The 45 mile Mauthe Lake cutoff will be 4am.

Refund Policy

Refunds will not be given once registration closes. There are no deferrals or refunds given after this deadline.

Awards

Awards will be given out to the overall first, second, and third place participant in each gender category. There will also be an award for the last on the course because you've have gotten every dollar out of your race entry fee. Every finisher will receive a finisher reward. Final design to be revealed in November.

Training Run

We will offer a training run opportunity in December 2024. Date to be finalized in fall. Water and hydration product to be supplied as well as a safe ride back to the start, should you need one.

Briefings

Athlete and volunteer briefings will be held in December 2024. Recordings of these briefings will become available post briefing.

Event's current local time: 3:32 AM CT