All states / Colorado
Groomed fat bike trails, passes and live grooming reports
Colorado's groomed fat biking is spread across high mountain towns: Crested Butte, Leadville and Steamboat have big volunteer-groomed networks, and many Nordic centers set aside bike trails for a trail fee. Grooming depends on snowfall at altitude, so check each system's report before you drive.
Checked November 12, 2026
GroomedPartly groomedPackedPlowedUngroomedOpen to bikes28 of 28 mapped · faded pins are approximate (town center)
Frisco / Breckenridge · Summit County, USFS and the Towns of Frisco and Breckenridge
over 8 mi groomed Mondays, Wednesdays and Fridays between the Frisco Nordic Center and Breckenridge Recreation Center; ride only when the snow isn't slushy. Fat bikes are not allowed on Frisco Nordic Center trails
Breckenridge · Town of Breckenridge Recreation
mileage not listed; fat bikes ride the groomed snowshoe and fat bike trails, not the 30 km of ski trails
Breckenridge · Town of Breckenridge Open Space & Trails
mileage not listed; three newly groomed miles past historic mining sites were added, shared with skiers and snowshoers
Vail · Vail Recreation District
13 km (about 8 mi) of fat bike trails at the Vail Golf Club; opening date depends on early snow
Leadville · Lake County PROS
12 mi loop around town, free and non-motorized; Lake County ended grooming early in 2025/26 for low snow
Leadville · Cloud City Wheelers
nearly 10 mi of groomed winter singletrack behind CMC, linking to the Mineral Belt Trail
Leadville · Tennessee Pass Nordic Center
mileage for bikes not listed; fat biking is a listed use on a network of more than 16 mi of groomed trail
Leadville · High Riders Snowmobile Club
14 mi loop groomed by the snowmobile club; shared with snowmobiles
Crested Butte · Crested Butte Nordic
nearly 10 km (about 6 mi): Town Ranch 3 km, Rec Path 3.5 km, Riverbend Connector 2.5 km; free, easy and flat. Bikes are not allowed on other CB Nordic trails
Crested Butte / Mt. Crested Butte · CBMBA
just under 4 mi from the Snodgrass trailhead to Gothic, mostly downhill on the way out
Crested Butte · CBMBA
mileage not listed; groomed by CBMBA for fat biking
Mt. Crested Butte · CBMBA
up to 3.5 mi of singletrack groomed for fat bikes on resort-owned land (the same page also lists a 1.5 mi loop); non-motorized, donations to CBMBA welcome
Gunnison · Gunnison Trails (BLM land)
more than 12 mi of singletrack groomed for fat bikes from the Gold Basin Rd or McCabe's Lane trailheads; Gunnison Nordic grooms the roads for skiing (grooming report is an older 2020 post)
Steamboat Springs · Routt County Riders (BLM and city land)
mileage not listed; free groomed singletrack incl. Orton, MGM, Prayer Flag, Blair Witch, Angry Grouse and NPR. Stay off when muddy; BLM Zone 2 is closed to fat bikes
Steamboat Springs · City of Steamboat Springs
mileage not listed; no fat bikes 2–6 p.m. Monday–Friday because of athlete training
Steamboat Springs · Haymaker Nordic Center
about 10 km (about 6 mi) of bike-specific groomed singletrack in three linked loops, plus a beginner loop; open 9–4 daily
Steamboat Springs · Lake Catamount Touring Center
mileage not listed; fat bike rentals on site
Oak Creek · Colorado Parks & Wildlife
8 mi of groomed winter trails per CPW (Routt County Riders lists 5.5 mi); free loaner fat bikes at the visitor center
Clark · Colorado Parks & Wildlife
4.2 mi Non-motorized Trails/Ski Touring Center loop open to fat bikes; the multiple-use snowmobile trail does not list bikes
Granby · YMCA of the Rockies
6 mi open to fat bikes; not all trails allow bikes and there are no fat bike rentals
Winter Park / Fraser · Town of Winter Park and Headwaters Trails Alliance
over 11 mi point to point from Fraser to Winter Park Resort; listed as a compacted route for fat bikes
Silverton
mileage not listed; groomed ski trails open to fat biking (older report, last grooming note March 2024)
Pagosa Springs · Pagosa Nordic Club (San Juan National Forest)
mileage not listed; a designated, marked and groomed loop for snowshoers, walkers and fat bikers from the parking lot
Pagosa Springs / Wolf Creek Pass · Wolf Creek Ski Area
10 km (about 6 mi) loop groomed for snowshoeing and fat biking with no use fees; ride the trail edge, and the 1 km access is an intermediate downhill
Telluride · Town of Telluride
mileage for bikes not listed; 15–20 km of groomed Nordic trails, with fat bikes allowed only on designated multi-use trails
Aspen
4.5 mi loop from the Aspen Recreation Center through the golf course and Marolt Open Space, ridden clockwise, with a groomed singletrack section; most Aspen Nordic trails are closed to bikes (older report, 2016)
Aspen / Basalt
groomed extent not listed; the Aspen section is listed as plowed snow/groomed and open to fat bikes
Divide · Colorado Parks & Wildlife
mileage not listed; a few trails are groomed when snow allows, and fat bikes may ride groomed trails designated for bikes (older report, 2024)
No trails match those filters.
Call ahead: fleets are small and sell out on powder weekends.