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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Trail Ridden Direction
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
Trail Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
  • < 2 days
  • < 1 week
  • < 2 weeks
  • < 1 month
  • < 6 months
  • > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
ContributeDetails
Colors indicate trail is missing specified detail.
  • Description
  • Photos
  • Description & Photos
  • Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months. Trails are compared with nearby trails in the same city region with a possible 25 colour shades. Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
  • most popular
  • popular
  • less popular
  • not popular

LEGEND
Trail Difficulties
  • Access Road/Trail
  • White
  • Green
  • Blue
  • Black
  • Double Black Diamond

Trail Report Status
  • Clear / Green
  • Minor Issue / Yellow
  • Significant Issue / Amber
  • Closed

  • Land Owner Overlay
  • Wilderness (typically no bikes in USA)
  • BLM (public)
  • USFS (Wildlife sanctuaries darker than usfs)
  • State land
  • Indigenous
  • Military
Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
  • Map Markers
  • trail Trail Head
  • photo Photo
  • place Directory Listing
  • region Riding Area
  • TTF TTF
  • Parking Parking
  • Viewpoint Viewpoint
  • Information Information
  • Warning Warning
  • Directions Directions
  • Sight Sight
  • Restrooms Restrooms
  • eBike Charging Point eBike Charging Point
  • Water Fountain/Source Water Fountain/Source
  • Gate Gate
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Ladder Ladder
  • Stairs Stairs
  • Bridge Bridge
  • Camping Camping
  • Cabin Cabin
  • Lodge Lodge
  • Bear Cache Bear Cache
  • Dock Dock
  • Ranger Station Ranger Station
  • Summit Summit
  • Other Other
      Grand County Colorado
      Region Details
      • 29
      • 1
      • 57
      • 92
      • 53
      • 7
      • 2

      Region Status
      Open as of Oct 5, 2019 ago

      Stats

      Avg Trail Rating
      Trails (view details)
      260
      Trails Mountain Bike
      243
      Trails E-Bike
      13
      Trails Hike
      142
      Trails Trail Running
      142
      Trails Horse
      14
      Trails Dirtbike
      4
      Trails ATV/ORV/OHV
      2
      Trails Snowmobile
      1
      Trails Snowshoe
      2
      Trails Nordic Ski
      2
      Total Distance
      342 miles
      Total Descent
      83,650 ft
      Total Vertical
      4,130 ft
      Highest Trailhead
      12,121 ft
      Reports
      830
      Photos
      698
      Ridden Counter
      29,549

      Popular Trail Networks

      title
      Granby Ranch 19 13 16 3
      Trestle Bike Park 8 19 18 4
      Idlewild 10 9
      Vasquez 2 13 5
      Fraser Valley 3 8 3
      view all areas »

      Photos of Grand County Mountain Bike

      trail: The Boulevard
      279 |
      Feb 2, 2018 @ 2:55pm
      Feb 2, 2018
      64 |
      Aug 24, 2017 @ 11:34am
      Aug 24, 2017
      trail: Green World
      53 |
      Aug 3, 2017 @ 4:07pm
      Aug 3, 2017
      184 |
      Sep 18, 2009 @ 7:26pm
      Sep 18, 2009

      Videos of Grand County Mountain Bike

      Tree hit
      0:59 | 107 | Oct 9, 2019
      #FridayFails WallRide attempt
      trail: No Quarter
      0:16 | 92 | Sep 27, 2019
      4:29 | 1 | Sep 16, 2019
      Trestle goofin
      trail: Space Ape
      0:56 | 14 | Sep 13, 2019

      Current Trail Warnings

      statustraildateconditionuserinfo
      Burnout Access
      Idlewild
      Oct 2, 2019 @ 8:32am
      Oct 2, 2019
      UnknownAksullivan94Trail has been decommissioned
      Idlewild
      Idlewild
      Sep 20, 2019 @ 12:06pm
      Sep 20, 2019
      Very Dryrossevan

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      user #954877jasbusheyriddentrailThe Boulevard
      Oct 10, 2019 @ 12:42pm
      Oct 10, 2019
      user #1405657Bbkaddvideo
      Oct 9, 2019 @ 10:09pm
      Oct 9, 2019
      user #1280502scuba6388votetrailBroken Spade and 1 more
      Oct 8, 2019 @ 6:35am
      Oct 8, 2019
      user #788625toddaddvideoClosing Day at Trestle Bike Park - PAPER BOY!
      Oct 7, 2019 @ 8:28am
      Oct 7, 2019
      user #788625toddaddtrailSpace Force and 2 more
      Oct 7, 2019 @ 8:28am
      Oct 7, 2019

      Recent Comments

      usernametypetitlecommentdate
      user #1381031rossevantrailSouth Fork LoopTrail conditions are great. One tree down.
      Sep 27, 2019 @ 4:43pm
      Sep 27, 2019
      user #1805355Jtdc88trailRazzmatazzBest downhill trail in the area (of resort)
      Sep 25, 2019 @ 1:38pm
      Sep 25, 2019
      user #1747209deherreraryanreportBroken SpadeSf ui
      Aug 24, 2019 @ 11:37am
      Aug 24, 2019
      user #1381031rossevantrailSouth Fork LoopWet, getting muddy 8.12.19
      Aug 12, 2019 @ 3:06pm
      Aug 12, 2019
      user #1261865provin1327trailWTB (East)This trail is awesome! I had previously...
      Aug 5, 2019 @ 9:36am
      Aug 5, 2019

      Local Badges

      • By robbinsdr GMBA & contributors
      • Admins: jpmcghee, GMBA, STT
      • #12863 - 1,469 views

      Downloading of trail gps tracks in kml & gpx formats is enabled for Grand County.
      You must login to download files.