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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • 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
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
inches

Radar Time
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.
Trails Deemphasized
Trails are shown in grey.
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      Activities Click to view
      Region Details
      • 1

      Region Status
      Open as of 2 days
      Local Trail Association

      Stats

      Avg Trail Rating
      Trails (view details)
      89
      Trails Mountain Bike
      1
      Trails Hike
      89
      Trails Trail Running
      89
      Trails Horse
      46
      Total Distance
      64 miles
      Total Descent
      17,665 ft
      Total Vertical
      3,014 ft
      Highest Trailhead
      8,476 ft
      Reports
      108
      Photos
      33
      Ridden Counter
      4,916

      Popular Boulder Open Space Mountain Biking Trails

      statustitledifficultyrating
      Chapman Drive

      Recent Ridelog Activity in Region

      Today
      • 0 rides
      • 0 ft avg distance
      Yesterday
      • 0 rides
      • 0 ft avg distance
      Past Week
      • 22 rides
      • 19 miles avg distance

      Photos of Boulder Open Space Mountain Bike

      trail: Royal Arch
      13 |
      Apr 13, 2021 @ 5:42am
      Apr 13, 2021
      trail: Royal Arch
      8 |
      Apr 13, 2021 @ 5:42am
      Apr 13, 2021
      trail: Royal Arch
      6 |
      Apr 13, 2021 @ 5:42am
      Apr 13, 2021
      4 |
      Oct 5, 2020 @ 1:57pm
      Oct 5, 2020
      5 |
      Oct 5, 2020 @ 1:57pm
      Oct 5, 2020
      trail: Ute
      144 |
      Jun 6, 2013 @ 4:44pm
      Jun 6, 2013
      trail: Boy Scout
      109 |
      Aug 26, 2011 @ 6:18pm
      Aug 26, 2011
      trail: Boy Scout
      593 |
      Jul 19, 2006 @ 5:25pm
      Jul 19, 2006

      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 | 101 | Dec 8, 2014
      Ute Valley
      trail: Ute
      1:20 | 299 | Nov 25, 2014
      Angel Fire MSC Race weekend
      trail: Viewpoint
      2:47 | 249 | Jun 14, 2012

      Recent Trail Reports

      statustraildateconditionuserinfo
      Chapman Drive
      Aug 31, 2021 @ 4:32pm
      Aug 31, 2021
      Idealjenncen COPMOBA

      Activity Feed

      usernameactiontypetitledate
      user #2848347jacobdkoaddreportBaseline Trail and 3 more
      Sep 19, 2021 @ 7:23pm
      2 days
      user #2848347jacobdkoaddreportBaseline Trail and 3 more
      Sep 16, 2021 @ 12:30pm
      Sep 16, 2021
      user #2848347jacobdkoaddreportMeadow Trail
      Sep 12, 2021 @ 7:14pm
      Sep 12, 2021
      user #2848347jacobdkoaddreportFlagstaff Trail and 1 more
      Sep 12, 2021 @ 6:43am
      Sep 12, 2021
      user #1583933jenncenaddreportChapman Drive
      Sep 5, 2021 @ 5:59pm
      Sep 5, 2021

      Nearby Areas

      namedistance
      CU South Campus 23.1 km
      Walker Ranch 1 1 13.2 km
      Betasso Preserve 4 14 km
      Valmont Bike Park 6 8 24.7 km
      Marshall Mesa/Doudy Draw/Flatirons Vista 16 45 km

      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike13 miles220 ft2,897 ft958 ft
      #6,559#2,79231072,605
      Hike8964 miles17,664 ft30 miles3,015 ft
      #5,692#2,643301081,259
      Trail Running8964 miles17,664 ft30 miles3,015 ft
      #5,699#2,6451081,015
      Horse4638 miles10,262 ft20 miles2,661 ft
      #97110
      • By canadaka Trailforks & contributors
      • Admins: BMA, darmabum, getvert, mpopetz, Pumpntrail, Iowegian
      • #28281 - 1,463 views

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