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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Inadequate
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
Trail Flow (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%
  • bi-directional trail
  • no data
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
Contribute Details
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
ATV/ORV/OHV Filter
Max Vehicle Width
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Radar Time
x Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
  • mountain biking recent
  • mountain biking (>6 month)
  • hiking (1 year)
  • moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
  • Downhill Ski
  • Backcountry Ski
  • Nordic Ski
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
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      This area span the the iconic Flatirons open space area with hiking trails to the tops of South Boulder Peak, Bear Peak, Green Mountain, Flagstaff and Mount Sanitas. For less strenuous climbing, check out the Mesa trail and NCAR and Chautauqua trail heads for mellow loops through meadows and trees.
      NCAR Trailhead Parking google parking directions
      Activities Click to view
      Region Details
      • 1

      Region Status
      Open as of 1 day

      Stats

      Avg Trail Rating
      Trails (view details)
      105
      Trails Mountain Bike
      1
      Trails Hike
      105
      Trails Trail Running
      105
      Trails Horse
      59
      Trails Snowshoe
      1
      Total Distance
      70 miles
      Total Descent
      17,467 ft
      Total Vertical
      3,202 ft
      Highest Trailhead
      8,476 ft
      Reports
      305
      Photos
      32
      Ridden Counter
      7,173

      Popular Boulder Open Space Mountain Biking Trails

      statustitledifficultyrating
      Chapman Drive

      Recent Ride Log Activity in Region

      Today
      • 3 rides
      Yesterday
      • 6 rides
      Past Week
      • 38 rides

      Photos of Boulder Open Space Mountain Bike

      trail: Bear Peak
      7 |
      Mar 27, 2022 @ 7:24am
      Mar 27, 2022
      trail: Royal Arch
      21 |
      Apr 13, 2021 @ 5:42am
      Apr 13, 2021
      trail: Royal Arch
      12 |
      Apr 13, 2021 @ 5:42am
      Apr 13, 2021
      trail: Royal Arch
      11 |
      Apr 13, 2021 @ 5:42am
      Apr 13, 2021
      5 |
      Oct 5, 2020 @ 1:57pm
      Oct 5, 2020
      6 |
      Oct 5, 2020 @ 1:57pm
      Oct 5, 2020
      8 |
      Oct 5, 2020 @ 1:57pm
      Oct 5, 2020
      15 |
      Oct 5, 2020 @ 1:57pm
      Oct 5, 2020

      Videos of Boulder Open Space Mountain Bike

      Ute trail,Lower pikes peak area,near Manitou...
      trail: Ute
      2:23 | 54 | Dec 31, 2015
      Ute Valley Dec 2014
      trail: Ute
      0:18 | 102 | Dec 8, 2014
      Ute Valley
      trail: Ute
      1:20 | 300 | Nov 25, 2014
      Angel Fire MSC Race weekend
      trail: Viewpoint
      2:47 | 249 | Jun 14, 2012

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      user #2848347jacobdkoaddreportBoulder Canyon Trail Fourmile Connection
      May 27, 2022 @ 6:54pm
      22 hours
      user #2848347jacobdkoaddreportBluebird Road and 4 more
      May 22, 2022 @ 12:17pm
      May 22, 2022
      user #2848347jacobdkoaddreportChapman Drive
      May 17, 2022 @ 1:49pm
      May 17, 2022
      user #2848347jacobdkoaddreportAmphitheater Trail and 3 more
      May 13, 2022 @ 10:33am
      May 13, 2022
      user #2848347jacobdkoaddreportSkunk Canyon Spur and 4 more
      May 11, 2022 @ 8:06pm
      May 11, 2022

      Nearby Areas

      namedistance
      The People's Crossing Park2.2 km
      CU South Campus 5 13.1 km
      Walker Ranch 1 1 13.2 km
      Betasso Preserve 4 14 km
      Valmont Bike Park 7 8 24.7 km

      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike13 miles16 ft446 ft955 ft
      #6,600#2,7752982,921
      Hike10570 miles17,467 ft31 miles3,202 ft
      #5,712#2,6283230591,895
      Trail Running10570 miles17,467 ft31 miles3,202 ft
      #5,718#2,63230591,674
      Horse5943 miles10,240 ft21 miles2,851 ft
      #1,293141
      Snowshoe1899 ft43 ft
      82
      • By canadaka Trailforks & contributors
      • Admins: WendyBMA, BMA, darmabum, getvert, jgebben, mpopetz, Pumpntrail, Iowegian
      • #28281 - 1,960 views
      • boulder open space activity log | embed map of Boulder Open Space mountain bike trails | boulder open space mountain biking points of interest

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