Fat Bike Birkie Saturday, March 8, 2025 • Cable, WI
The Fat Bike Birkie is the premier on-snow bike event in North America. Riders test their skill and endurance on the professionally groomed American Birkebeiner Ski Trail, with options for every rider’s ability level. The event has three distances: the Big Fat 47km race, the Half Fat 21km race, and the Fun Fat 10km Tour. The fun doesn’t stop after the finish lines – riders test equipment at the Birkie Fat Bike Expo, and enjoy live music and food at the post-race party.
Fat Bike Birkie is an Open-Class Bike Race
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 conditions. Bikes should equipped with at least 3.5 inch wide tires, suitable to course conditions.
Please note, Class 1 fat bike e-bikes are allowed in the Fat Bike Birkie. At this time, e-bike riders will not be eligible for awards or results placement.
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.
Registration closes on Friday, March 7, 2025 at 7:00pm CST.
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 early to guarantee your Fat Bike Birkie t-shirt!
Race/Event Change Request
The deadline for requesting a change in race/event distances is Friday, March 7, 2025 at 7:00pm CST.
Scroll down to your event and click on “Manage Registration”
Click on “Transfer Event” (along both top and bottom menus).
Then select which new race you want to transfer to and complete new registration. You will be charged any differences and/or associated fees in the final cart. There is a $25 change fee.
2025 Birkie Gear Bag
As part of our ongoing Birkie Green initiative, we’ve partnered with SWIX on the Birkie gear bag! The reusable Birkie gear bag is available for $70 and only during registration for the Birkie, Korte, Prince Haakon and Fat Bike Birkie.
During the 2025 registration process, you can claim your own bag for only $70! The $145 value Birkie gear bag is available during the registration process only.
Quantities limited! Register for the race and gear bag soon to guarantee a Birkie gear bag!
Birkie gear bags will be distributed as part of bib pick-up.
To add-on a Birkie Gear Bag (subject to availability):
Scroll down to your event and click ‘Manage Registration’
Click ‘Add Ons’ (along either top or bottom menu)
Change your “Birkie Gear Bag” selection
Birkie Gear Bag Features
The Birkie gear bag has large, heavier zippers and plastic clips throughout the bag.
Reinforced #10 zippers
Tarpaulin panel on the bottom section for waterproofing and greater durability
Bottom wet-sealed compartment for Nordic Boot storage (fits up to size 13 Nordic boot)
Fleeced lined Sports Shield zipped compartment for glasses or visor, with brushed lining to prevent lens scratches and quick, easy access
Large top-load zippered compartment for warm-up clothing, extra hats, and gloves
Two zippered side compartments for extra water bottles and accessories
Inside secured pocket for valuables; mobile phone, keys and wallet pocket
Main pack body is made from tough 600D PVC backed polyester, internal frame-sheet transfers weight evenly and contours to the wearer’s back
Padded EVA foam back offers cushioning and breathability over pressure points, and padded shoulder straps and harness system to distribute weight evenly
Getting to the Venue
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.
Start Gates
Riders will be assigned to multiple start gates based on the last 3 year’s of Fat Bike Birkie results for all races.
The Big Fat (47K) race will feature 4 start gates. Riders will be placed in one of these gates based on their best finish time from the previous 3 Big Fat or Half Fat (21K) races. Riders without a result in the past 3 Big Fat or Half Fat races will be assigned to Gate 4.
The Half Fat (21K) has just one start time and gate.
2025 Big Fat Gate Assignments Based on BIG FAT Results
Big Fat Gate
2024 Big Fat Finish Time
2023 Big Fat Finish Time
2022 Big Fat Finish Time
Gate 1
1:46:25 to 2:02:23
1:49:57 to 2:06:27
1:50:51 to 2:07:29
Gate 2
2:02:24 to 2:26:51
2:06:28 to 2:31:44
2:07:30 to 2:32:58
Gate 3
2:26:52 to 3:00:55
2:31:45 to 3:06:55
2:32:59 to 3:08:27
Gate 4
NEW PARTICIPANTS & PARTICIPANTS WITH NO RESULTS FOR LAST 3 YEARS
NEW PARTICIPANTS & PARTICIPANTS WITH NO RESULTS FOR LAST 3 YEARS
NEW PARTICIPANTS & PARTICIPANTS WITH NO RESULTS FOR LAST 3 YEARS
2025 Big Fat Gate Assignments Based on Half Fat Results
Big Fat Gate
2024 Half Fat Finish Time
2023 Half Fat Finish Time
2022 Half Fat Finish Time
Gate 1
ACHIEVED WITH BIG FAT RESULTS ONLY
ACHIEVED WITH BIG FAT RESULTS ONLY
ACHIEVED WITH BIG FAT RESULTS ONLY
Gate 2
0:38:35 to 0:44:22
0:51:35 to 0:59:19
0:52:44 to 1:00:39
Gate 3
0:44:23 to 0:53:15
0:59:20 to 1:11:11
1:00:40 to 1:12:46
Gate 4
NEW PARTICIPANTS & PARTICIPANTS WITH NO RESULTS FOR LAST 3 YEARS
NEW PARTICIPANTS & PARTICIPANTS WITH NO RESULTS FOR LAST 3 YEARS
NEW PARTICIPANTS & PARTICIPANTS WITH NO RESULTS FOR LAST 3 YEARS
Awards
The awards ceremony will take place at the podium outside of the Dersken Family Great Hall. Overall awards for the Half Fat will begin at 9:30 am. Age Group awards for both races and Overall Awards for the Big Fat will begin at 12:00 pm.
Fat Bike Birkie Overall Trophies will be presented to the first three male & female finishers of the Big Fat and Half Fat races. The top three winners will also receive a custom race vest from Borah Teamwear.
Age Class Awards will be given to the 1st, 2nd and 3rd place riders, male and female, in
each age class for the Fat Bike Races.
Big Fat – 16-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
Gold Circle Elite Gold Level Sponsors of the Major Birkie Events Year-Round
Be Part of the Birkie and the Markets We Serve!
Mike Brown Interim Partnership Director American Birkebeiner® Ski Foundation mike.brown@birkie.com
Volunteer
Want to get involved, see this event up close and personal, and be part of what makes Birkie events great? Contact the Birkie at 715-634-5025 x:2 or click HERE for available shifts. There is no obligation — we’re happy to answer your questions. Contact us today!
