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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
      No description for Boulder County has been added yet! Login or register to submit one.
      featured
      Region Details
      • 41
      • 6
      • 66
      • 54
      • 44
      • 4

      Region Status
      Open as of 2 days ago

      Stats

      Avg Trail Rating
      Trails (view details)
      387
      Trails Mountain Bike
      216
      Trails E-Bike
      21
      Trails Hike
      382
      Trails Trail Running
      382
      Trails Horse
      60
      Trails Dirtbike
      6
      Trails ATV/ORV/OHV
      6
      Total Distance
      602 miles
      Total Descent
      101,527 ft
      Total Vertical
      8,290 ft
      Highest Trailhead
      13,212 ft
      Reports
      2,385
      Photos
      621
      Ridden Counter
      25,204

      Photos of Boulder County Mountain Bike

      15 |
      Mar 9, 2019 @ 7:53am
      Mar 9, 2019
      51 |
      Mar 9, 2019 @ 7:47am
      Mar 9, 2019
      90 |
      Mar 9, 2019 @ 7:37am
      Mar 9, 2019
      trail: Davidson Mesa
      26 |
      Mar 9, 2019 @ 5:50am
      Mar 9, 2019

      Videos of Boulder County Mountain Bike

      Alt line on Reroot - The Rock Garden
      trail: Re-Root
      0:16 | 49 | Sep 3, 2019
      Alt line on Reroot - The Drop
      trail: Re-Root
      0:05 | 42 | Sep 3, 2019
      Alt line on Reroot - Sam's Club
      trail: Re-Root
      0:09 | 35 | Sep 3, 2019
      Alt line on Reroot - The Clavicle
      trail: Re-Root
      0:08 | 39 | Sep 3, 2019

      Current Trail Warnings

      statustraildateconditionuserinfo
      Saddle East (842)
      Lefthand OHV
      Oct 13, 2019 @ 1:07pm
      2 days
      Dryspeigei
      Open Sky Loop
      Lagerman Agricultural Preserve
      Oct 13, 2019 @ 1:00pm
      2 days
      DryTomis916Segment that parallels 75th Street is...
      Boulder Canyon Trail
      Boulder
      Sep 23, 2019 @ 8:40am
      Sep 23, 2019
      UnknownWendyBMA BMBA Closed on September 23, 2019 - end of...

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      user #1740945speigeiaddreportLefthand Main (286) and 7 more
      Oct 14, 2019 @ 8:19am
      1 days
      user #1329027WYGregaddreportLefthand Main (286) and 5 more
      Oct 13, 2019 @ 7:35pm
      2 days
      user #960208Tomis916addreportOpen Sky Loop and 1 more
      Oct 13, 2019 @ 12:56pm
      2 days
      user #1954499Richmurray123addreport
      Oct 13, 2019 @ 9:42am
      2 days
      user #861347lubes17319difficultyvotetrailIndiana Jones
      Oct 10, 2019 @ 7:44am
      Oct 10, 2019

      Recent Comments

      usernametypetitlecommentdate
      user #1936283LfrankowtrailSchoolbusI’d label this more blue/black. There is...
      Sep 22, 2019 @ 8:14am
      Sep 22, 2019
      user #1114430NopedRightOuttrailBon Scott (845)Ain’t no one trying to climb this shit!
      Sep 19, 2019 @ 7:31pm
      Sep 19, 2019
      user #731469GrunktrailBon Scott (845)Keep Lefthand rad. DH only. Don't climb it.
      Sep 16, 2019 @ 3:48pm
      Sep 16, 2019
      user #1829075samlivitrailWapitiGreat trail but it's rocky
      Aug 25, 2019 @ 3:12pm
      Aug 25, 2019
      user #1864310bocomtbtrailBenjamin LoopCW: Fast and fun. Worth 2 laps. CCW: No flow...
      Aug 21, 2019 @ 1:03pm
      Aug 21, 2019

      Local Badges

      • By TheNormsk & contributors
      • Admins: jpmcghee, BMBA, darmabum, getvert, Pumpntrail, BoulderRec
      • #15769 - 2,025 views
      • boulder county activity log | embed map of Boulder County mountain bike trails | boulder county mountain biking points of interest
      • subscribe 3d map donate to earn trail karma!

      Downloading of trail gps tracks in kml & gpx formats is enabled for Boulder County.
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