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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Partial
  • 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
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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
  • Snowmobile
Winter Trails
Warning A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
x Missing Trails
Most Popular
Least Popular
Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
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
      • 45
      • 26
      • 42
      • 25
      • 30
      • 12
      • 2

      Region Status
      Caution as of 5 hours
      Local Trail Association

      Stats

      Avg Trail Rating
      Trails (view details)
      327
      Trails Mountain Bike
      190
      Trails E-Bike
      76
      Trails Horse
      117
      Trails Hike
      337
      Trails Trail Running
      337
      Trails Dirtbike/Moto
      2
      Trails Observed Trials
      2
      Trails ATV/ORV/OHV
      2
      Trails Snowshoe
      1
      Total Distance
      272 miles
      Total Descent
      48,428 ft
      Total Vertical
      3,408 ft
      Highest Trailhead
      8,476 ft
      Reports
      9,577
      Photos
      465
      Ridden Counter
      106,761

      Outside Logo Articles

      An Insider’s Guide to the Best Hikes in Boulder, Colorado
      Feb 26, 2024 from outsideonline.com
      After 25 years of hiking in his hometown of Boulder, guidebook author James Dziezynski reveals his all-time favorite treks in the area. Plus,...
      Sub Regions

      Photos of Boulder Mountain Bike

      13 |
      Oct 10, 2024 @ 1:29pm
      Oct 10, 2024
      9 |
      Oct 10, 2024 @ 1:29pm
      Oct 10, 2024
      7 |
      Oct 10, 2024 @ 1:29pm
      Oct 10, 2024
      369 |
      Mar 9, 2019 @ 7:47am
      Mar 9, 2019
      913 |
      Mar 9, 2019 @ 7:37am
      Mar 9, 2019
      trail: Canyon Loop
      748 |
      Apr 13, 2018 @ 7:40am
      Apr 13, 2018
      trail: Fourmile Link
      460 |
      Apr 13, 2018 @ 7:40am
      Apr 13, 2018
      606 |
      Jun 6, 2017 @ 1:31pm
      Jun 6, 2017

      Videos of Boulder Mountain Bike

      TA - 1.0
      trail: Deadass
      65 | Jan 12, 2024
      David Lee Roth trail
      193 | Nov 8, 2023
      Valmont Slopestyle jump line
      trail: Slopestyle
      41 | Nov 8, 2023
      STEEZL - a 155mm Steel Enduro Race Weapon
      | Mar 4, 2023
      STEEZL - a 155mm Steel Enduro Race Weapon
      | Mar 3, 2023
      Moon Booter
      | Mar 28, 2022
      Hot-Lap
      trail: Hot Lap
      4:02 | 272 | Jun 3, 2020
      Friday Fail May 2020
      0:17 | 702 | May 8, 2020

      Current Trail Warnings

      statustraildateconditionuserinfo
      North Sky Trail
      Feb 9, 2025 @ 9:38pm
      13 hours
      Prevalent MudWendyBMA BMA Open but still fairly muddy, not recommended.
      Eagle (West)
      Feb 9, 2025 @ 9:38pm
      13 hours
      Prevalent MudWendyBMA BMA Open but still fairly muddy, not recommended.
      Deadass
      Feb 5, 2025 @ 9:51am
      Feb 5, 2025
      Snow Cover Partialthegb1212E-Bike Snow drifts and mud throughout the top...

      Recent Trail Reports

      statustraildateconditioninfouser
      Marshall Valley
      Feb 10, 2025 @ 5:56am
      5 hours
      WetMuddy at the west end leading up to the...misha7010
      Coal Seam
      Feb 10, 2025 @ 5:54am
      5 hours
      WetStill some wet spots.misha7010
      Greenbelt Plateau
      Feb 10, 2025 @ 5:53am
      5 hours
      Drymisha7010
      High Plains
      Feb 10, 2025 @ 5:52am
      5 hours
      VariableOne short snow drift at the southern...misha7010
      Coalton
      Feb 10, 2025 @ 5:51am
      5 hours
      Idealmisha7010
      Springbrook South
      Feb 9, 2025 @ 9:37pm
      13 hours
      Unknown Trail is open. Please update conditions...WendyBMA BMA
      Springbrook North Rd
      Feb 9, 2025 @ 9:37pm
      13 hours
      Unknown Trail is open. Please update conditions...WendyBMA BMA
      Springbrook North
      Feb 9, 2025 @ 9:37pm
      13 hours
      Unknown Trail is open. Please update conditions...WendyBMA BMA
      Springbrook Connector
      Feb 9, 2025 @ 9:37pm
      13 hours
      Unknown Trail is open. Please update conditions...WendyBMA BMA
      Prairie Vista
      Feb 9, 2025 @ 9:37pm
      13 hours
      Unknown Trail is open. Please update conditions...WendyBMA BMA

      Activity Feed

      usernameactiontypetitledate
      misha7010addreportactivity #66002092 and 5 more
      Feb 10, 2025 @ 5:50am
      5 hours
      WendyBMAaddreportactivity #65993121 and 1 more
      Feb 9, 2025 @ 9:38pm
      13 hours
      WendyBMAaddreportactivity #65993094 and 21 more
      Feb 9, 2025 @ 9:37pm
      13 hours
      nKwTIMuYaddreportactivity #65979497 and 1 more
      Feb 9, 2025 @ 2:06pm
      21 hours
      WendyBMAaddreportactivity #65846534 and 1 more
      Feb 7, 2025 @ 2:24pm
      3 days

      Recent Comments

      usernametypetitlecommentdate
      DanMGtrailM&MFun flowy trail that has a way differrent...
      Nov 21, 2024 @ 8:46am
      Nov 21, 2024
      DanMGtrailDeadassWas a great trail that is now super rutty and...
      Nov 21, 2024 @ 8:37am
      Nov 21, 2024
      gs0xfHtrailM&MPersonally I would not ride this trail. It’s...
      Oct 26, 2024 @ 1:21pm
      Oct 26, 2024
      bikebaronesstrailWalker Ranch LoopThere's a trail split near the top of the...
      Sep 2, 2024 @ 4:15pm
      Sep 2, 2024
      cgrigsbytrailFoothills - NorthLee Hill to North Sky Trail is definitely a...
      Aug 11, 2024 @ 7:52am
      Aug 11, 2024

      Local Badges


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike189171 miles23,806 ft75 miles3,123 ft
      #91#423779,44031107,672
      E-Bike7697 miles4,941 ft41 miles3,123 ft
      #182#605,70612,951
      Horse11796 miles13,688 ft44 miles2,979 ft
      #64#531,477172
      Hike334270 miles47,106 ft118 miles3,409 ft
      #78#42938,1243213,701
      Trail Running337270 miles47,106 ft118 miles3,409 ft
      #79#4218,1242915,297
      Dirtbike/Moto27 miles1,260 ft5 miles791 ft
      1,22716
      Observed Trials27 miles1,260 ft5 miles791 ft
      242
      ATV/ORV/OHV27 miles1,260 ft5 miles791 ft
      1,2271
      Snowshoe1899 ft43 ft
      31723
      • By canadakaTF Pro Trailforks & contributors
      • Admins: WendyBMA, BMA, amrosen, getvert, mpopetz, Pumpntrail, Iowegian
      • #4922 - 32,133 views

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