A relative newcomer to the two-wheel scene, fat biking is taking off throughout the country, and Routt County is no exception! Fat biking provides a way for avid riders to get their winter fix, long after trails are covered with snow.

Please stay off the trails when they are soft to keep the trails in great condition year round.

IMBA’s Fat Bike Best Practices

Voluntary Closure

Dec 1 through April 15

Greenville Mine area (Roads 440 and 471)
Coulton Creek area (Trail 1188 and Road 4129)
Lower Bear Trail 1206
Sarvis Creek Trail 1105
Silver Creek Trail 1106

Where Should I Fat Bike?

General Information:

34855 Highway 40
Open 9:00am-4:00pm daily
10 kilometers of bike-specific groomed single track
Three loops options, all linking together
Rolling terrain, challenging for even the expert rider
One gentle loop for the beginner
Trail ticket required


Classic Crank Bicycle Shop

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This is a Emerald Mountain Special Recreation Management Area.

Zone 1 North of and including Ridge Trail (Ridge & Rotary trails)

Open to fat bikes with restrictions.
Open when not muddy.

Zone 2 Kemry Draw and trails south of Ridge trail in Zone 1 (Beall Trail)

Closed to the public from December 1 to June 30 to protect wintering and calving elk.
Besides Beall Trail, Zone 2 is closed to fat bikes and mountain bikes, even beyond the winter closure period.

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Open to fat bikes with restrictions.
Trail fee required ($20 for adults).
Fat bike rentals available.

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Public roads not maintained in the winter:

Open to fat bikes with restrictions.
Outfitters need to acquire the proper permits.

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25500 County Road 14 / Open 6:00am-10:00pm daily
  • 5.5 miles of free groomed winter trails In addition to the free trail system
  • Specialized Fat Tire Bikes available for free to newcomers to the sport or for those traveling without their equipment (loaner bikes are for use only at Stagecoach State Park)
  • The reservoir surface is also a fantastic place to ride once the surface freezes, with that season usually running late December – late March
  • All open trails are clearly marked by blue trail poles in areas where navigation may be difficult in adverse conditions.
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Open to fat bikes with restrictions.
Closed during normal hours of operations.

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Howelsen Hill Nordic Center

Open to fat bikes with restrictions.
Howelsen ticket or pass is required ($14 Nordic, no lift access).
Fat biking not allowed between 2 – 6pm, Monday – Friday.
Check out the grooming map.
Nordic Hotline: 970-871-7084

Trail Etiquette
Emerald Mountain

Includes everything outside of Howelsen Hill Ski Area & Nordic Center
Open to fat bikes.
Open when not muddy.

DEC 1 – APRIL 15
Greenville Mine Area (Rd 440 & 471)
Coulton Creek Area (Trail 1188 & Rd 429)
Lower Bear Trail 1206
Sarvis Creek Trail 1105
Silver Creek Trail 1106
Open to fat bikes with restrictions.
Open when not muddy.
No biking on trails and areas closed for protection of deer and elk winter range habitat.

Closed to all winter recreation traffic – whether by bike, horse, snowshoe, ski or foot.

Steamboat Area: Spring Creek Closure Area, Red Dirt, Mad Creek, Hot Springs and Lower Bear trails.
Clark: Forest Road 440 Greenville Mine Road, north side of Seedhouse Road area/Coulton Creek, other areas posted with signs.
Same as in summer, riders must walk bikes through Fish Creek Falls Recreation Area. This includes trails to the overlook and bridge. Once past bridge, you can make the climb.

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Let’s Get Back to Biking