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Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
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 or Major Issue / Red

  • 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 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
  • Water Fountain/Source Water Fountain/Source
  • Sight Sight
  • Restrooms Restrooms
  • Gate Gate
  • Camping Camping
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Other Other
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 or Major Issue / Red

  • 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 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
  • Water Fountain/Source Water Fountain/Source
  • Sight Sight
  • Restrooms Restrooms
  • Gate Gate
  • Camping Camping
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Other Other

      Popular Riding Areas

      title
      Magnolia 6 15 11
      Marshall Mesa 15
      Valmont Bike Park 5 10 2
      Boulder Open Space 4 7 3
      Lefthand OHV 1 2 4 4
      view all areas »
      No description for Boulder County has been added yet! Login or register to submit one.
      Region Details
      • 43
      • 6
      • 54
      • 52
      • 36
      • 7


      Caution on 10 hours

      Stats

      Avg Trail Rating
      Trails (view details)
      198
      Trails Mountain Bike
      198
      Trails E-Bike
      1
      Trails Hike
      198
      Trails Trail Running
      198
      Trails Dirtbike
      1
      Trails ATV
      1
      Total Distance
      325 miles
      Total Descent Distance
      130 miles
      Total Descent
      39,979 ft
      Total Vertical
      6,678 ft
      Highest Trailhead
      11,682 ft
      Reports
      868
      Photos
      266
      Ridden Counter
      10,123

      Photos of Boulder County Mountain Bike

      181 |
      Dec 13, 2018 @ 11:57am
      2 days
      South St Vrain (909)
      trail: Antelope
      4 |
      Nov 29, 2018 @ 5:43pm
      Nov 29, 2018
      Antelope, Lyons
      2 |
      Nov 28, 2018 @ 3:30pm
      Nov 28, 2018
      West Magnolia Winter Fat Bike...
      trail: Canyon Loop
      71 |
      Apr 13, 2018 @ 7:40am
      Apr 13, 2018
      Canyon Loop, Boulder
      more photos »

      Videos of Boulder County Mountain Bike

      A quick romp in left hand canyon
      1:52 | 21 | Nov 18, 2018
      Caribou Tour, nederland, no music
      2:33 | 24 | Feb 14, 2018
      Caribou Tour, nederland
      2:35 | 18 | Feb 14, 2018
      Santa Shreds
      trail: Betasso
      1:40 | 542 | Dec 21, 2017
      more videos »

      Boulder County Mountain Bike Routes

      titleratingdistance
      Dirty Bismark
      15 miles
      Hall Ranch Technical Descent
      12 miles
      Walker Ranch counter clockwise
      8 miles
      Heil Ranch, frontside
      8 miles

      Recent Comments

      usernametypetitlecommentdate
      user #1061466fattyheadshoktrailRe-rootI’m not a local by any stretch. However I...
      Oct 30, 2018 @ 8:09pm
      Oct 30, 2018
      user #795360mirahladikreportPipe Trailltttqdpxwsxl p pjbmpad beqd
      Jul 31, 2018 @ 8:36am
      Jul 31, 2018
      user #1550651tshralpertrailCanyon LoopThis trail is closed to mountain bikes on...
      Jul 7, 2018 @ 8:37pm
      Jul 7, 2018
      user #1550651tshralpertrailBenjamin LoopThis trail is closed to mountain bikes on...
      Jul 7, 2018 @ 8:36pm
      Jul 7, 2018
      user #1436118EthanrmtbtrailDual SlalomShould be rated blue
      Jun 16, 2018 @ 12:50pm
      Jun 16, 2018
      more »

      Recent Activity

      usernameactiontypetitledate
      user #1217823DRMTB51addridelogDec 15, 2018 ride log
      Dec 15, 2018 @ 9:52am
      23 mins
      user #1435970JakeMartelldifficultyvotetrailSaddle East (842) and 1 more
      Dec 15, 2018 @ 12:13am
      10 hours
      user #1435970JakeMartelladdreportSaddle East (842)
      Dec 15, 2018 @ 12:12am
      10 hours
      user #1435970JakeMartellvotetrailSaddle East (842)
      Dec 15, 2018 @ 12:12am
      10 hours
      user #656814kind0fimportantaddridelogDec 14, 2018 ride log
      Dec 14, 2018 @ 6:35pm
      16 hours
      view more »
      • By TheNormsk & contributors
      • Admins: jpmcghee, BMBA
      • #15769 - 1,113 views
      • boulder county activity log | embed map of Boulder County mountain bike trails | boulder county mountain biking points of interest
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