On the World Famous Birkie Trail in Cable, Wisconsin!

The Fat Bike Birkie, Presented by Freewheel Bike, is the premier on snow bike event in North America. Riders test their skill and endurance on the professionally groomed American Birkebeiner Ski Trail!

THREE events to choose from: The Big Fat 47K, The Half Fat 21K, and the un-timed Fun Fat 10K Tour – there is something for every rider!

We remain committed to providing inspiring opportunities to promote a healthy active lifestyle and wellness events for all.  We will take every safety precaution and measure to ensure the safety of our participants, volunteers, spectators, staff, and local communities.

Fat Bike Birkie is an Open-Class Bike Race

There are no restrictions on the specific tire size allowed. The Birkie groomers are some of the best in the world and have the goal of providing a firm surface to ride on for the races. However, we cannot control the weather and the course conditions can vary widely, from hard packed to soft powder. Just like in the Birkie Ski race, Fat Bike Birkie participants are free to choose different equipment based on the conditions of the course. We recommend that participants be prepared to race in any course condition, on a bike equipped with at least 3.5 inch wide tires.

E-bikes are not allowed for any event of the Fat Bike Birkie on Saturday, however, may be ridden during Friday’s pre-ride of the trail only.

No special equipment classes will be recognized in the Fat Bike Birkie results or awards.  Tandems bikes are allowed, but there is not a special class and will not be eligible for awards.  Each tandem rider must register and contact registration@birkie.com to ensure the proper results are shown.

Event/Distance Options

The Big Fat 47K Race

The Half Fat 21K Race 

The Fun Fat 10K Tour

Fat Bike Birkie Start


2022 Fat Bike Birkie Registration is Now Open!

 May 1 through September 16September 17 through November 11November 12 through January 21January 22 until full or March 11
Big Fat or Half Fat Race$75$85$95$105
Fun Fat Tour$65$75$85$95

All Big Fat 47K participants must be at least 16 years of age on race day. All Half Fat 21K and Fun Fat 10K participants must be at least 12 years of age on race day.


Register now to guarantee your Fat Bike Birkie t-shirt!

2022 T-shirt Design

Protect Your Registration!

Get reimbursed up to 100% on your registration if you can’t compete for a number of reasons.  Next Wave Insurance offers Regsaver so you can insure your non-refundable registration fee in the case injury, illness, or another covered peril occurs.* Please see policy for complete list of covered perils at www.registrationsaver.com/birkie. Limitations and exclusions apply. Next Wave Insurance, CA License #: OF00755.

Regsaver - An AIG insurance policy to cover your registration fees - Learn More

Learn More About RegSaver Registration Protection!

2022 Birkie Gear Bag

It’s back for 2022!  This year, as part of our ongoing Birkie Green initiative we’ve designed a new custom Birkie gear bag with SWIX!  The reusable Birkie gear bag is available for $50 and only during registration for the Birkie, Korte, Prince Haakon and Fat Bike Birkie.

2022 Birkie Gear Bag


Birkie Green As part of 2022 race registration, ABSF members will automatically receive a copy of the 2021 Birch Scroll® magazine. If you are not a member and would like to join the ABSF or would like to purchase a copy of the 2022 Birch Scroll results issue, you may pre-order a copy during your race registration process. As part of ongoing Birkie Green initiatives, all registered participants will receive a digital copy of the 2021 Birch Scroll magazine.

Getting There

Driving to the American Birkebeiner Trailhead – Start & Finish Venue

All races start and finish at the American Birkebeiner Trailhead, Cable, Wisconsin.  Access to the start area is available ONLY from Telemark Road.  GPS Coordinates: 46.193613, -91.256976

  • From Cable, WI, Take Highway M traveling East out of Cable for 2-miles. Turn right on Telemark Road.  Follow the road past the former Telemark Lodge to the designated parking areas.  Follow the directions of the parking attendants.

Schedule of Events

Two Full Days of Fat Bike Birkie at the Birkie Trailhead in Cable!


Courses Open for Pre-Riding10:00 AM – 3:00 PM
Expo / Bib Pick-Up / Bike Demos / Birkie Store 1:00 PM – 7:00 PM


Bib Pick Up - In the Great Hall6:30 AM to 7:30 AM
47 km Fat Bike Birkie - The Big Fat 8:00 AM
21 km Fat Bike Birkie - The Half Fat8:15 AM
10 km Fat Bike Birkie - The Fun Fat Tour8:30 AM
Expo / Bib Pick-Up / Bike Demos / Birkie Store / Brats + Beer!All Day
Post-Race Party for All Participants--Food! Plus your first beer is Free!
Spectators and families can purchase meal tickets, too!
10:30 AM to 2:30 PM

Fat Bike Expo & Bib Pick Up

Open from 1:00 pm to 7:00 pm on Friday, March 11.

  • Fat Bike Birkie EXPO — Great Gear and Guidance from FBB Sponsors
  • Fat Bike Demos All Day
  • The Birkie Store, with Great Birkie Merchandise

Course Information

Both races and the Tour will start and finish at the American Birkebeiner Trailhead in Cable, WI.

Cut off time is 2pm for all events.

Course description:

The Big Fat 47K course will ride out on the Birkie Classic Trail to the Powerlines, make a quick turn to the left and rejoin the Classic Trail. After riding on the Classic Trail to OO, the course will return on the Birkie Skate Trail to the Powerlines where it will come into the finish.The Half Fat 21K course will ride out the Birkie Classic Trail to the Powerlines to Timber Trail where it will enter the Half Fat only course.  The Fun Fat 10K Tour will ride on a mix of Birkie Classic Trail, smaller ski trails, and the Half Fat course before finishing the same way as the Big Fat 47K and Half Fat 21K races

Interactive Course Map

Experience the race again or for the first time! Roll over the epic hills on the legendary Birkie Trail, witness the race rollout, ride along with the pace cameras, check out the Half Fat 21K and Big Fat 47K courses, and feel the rush as you virtually ride the Fat Bike Birkie. This interactive map experience has it all!

The race course will be ridden clockwise starting with the Birkie Classic Trail and finishing on the Birkie Skate Trail!

View Interactive Course Map »

Pre-Riding the Course — When & Where

The Fat Bike Birkie Race Courses will be groomed and marked for pre-riding on Friday, March 12 from 10:00 am to 3:00 pm.  Please follow signs carefully.

Please note that riding bikes on the Birkie Trail during the winter is only allowed on the days designated for the Fat Bike Birkie event. However, winter bike riding can be accessed from many of the trailheads utilizing the Chequamegon Area Mountain Bike Association trail system. Trail conditions can be found on the CAMBA Winter FAT BIKE page.

Track Your Rider

Family and friends can track their riders as they journey toward the finish line.
  • Here’s How You Can Track a Rider:
    • Sign-up to receive tracking updates via SMS/text or email for Fat Bike Birkie riders, by clicking here, or through the Birkie app.
    • Enter the participant’s name along with your mobile/cell phone number or email address to receive SMS/text messages (charges may apply).
    • Here are the points along the trail where you’ll be able to track your skier’s progress:
      •  Big Fat: Timber Trail (6.6K), OO Trailhead (24K), Timber Trail (37.7K), Finish Line
      • Half Fat: Timber Trail (6.6K), Nordmoor (18K), Finish Line
      • Fun Fat: Finish line only
  • CLICK HERE to track your rider


fbb-podiumFat Bike Birkie Overall Trophies will be presented to the first three male & female finishers of the Full Fat and Half Fat races.  The top 3 winners in each race will also receive a custom vest created by Borah Teamwear!

Awards will be immediately following the finish of the top 3 racers.


Presenting Sponsor

1up USA
Northern Lakes Cooperative
Backroads Coffee
New Moon Ski Shop
Onyx Racing Products


Want to get involved, see this event up close and personal, and be part of what makes Birkie events great? We’d love to hear from you! Contact the Birkie at 715-634-5025 x:2,1 or click here for available shifts. There is no obligation — we’re happy to answer your questions. Contact us today!


Please contact us with any questions at birkie@birkie.com or 715-634-5025.