4,974 ft
Distance
15 ft
Climb
-707 ft
Descent
00:09:05
Avg time
Supporters, Builders, Maintainers & Land Managers of Bon Scott Trail

  • USFS
    Land Manager

Bon Scott Details

  • Activities
    • Mountain Bike
    • Hike
    • Trail Running
  • Riding Area
    Lefthand OHV
    Boulder, Colorado
  • Difficulty Rating
    Black Diamond rate
  • Voted Difficulty
    Black Diamond (7 votes)
  • Trail Type
    Singletrack
  • Direction
    Downhill Only
    Popular direction shown
  • Physical Rating
    Hard
  • Dogs Allowed
    Yes
  • eBike Allowed
    No
  • Global Ranking
    #47590 in Mountain Biking [+]
    • #50113 in Trail Running
    • #63871 in Hiking
  • Local Popularity
    65 in Mountain Biking [+]
    • 30 in Trail Running
    • 35 in Hiking
  • Land Owner
    USFS - Boulder Ranger District

Make sure your brakes are in good working order and prepare to hold on for dear life This trail is by far the steepest and most demanding of any trail around Boulder. The trail descends what used to be a moto trail although it's not too deep or dug out and works great for mountain biking. Expect steep, tight switchbacks, fast wide open sections, and a few rock rolls. Guaranteed to put a smile on your face and scare you a bit at the same time.

This trail was built by the OHV community but they never had a chance to ride it before the area was closed to motorized use and the trail has never been officially designated by the USFS.

This trail is unsanctioned.

Traditionally Indigenous Territory
More Stats for Bon Scott mountain bike trail trail
  • Altitude change
    -692 ft
  • Altitude min
    6,416 ft
  • Altitude max
    7,122 ft
  • Altitude start
    7,108 ft
  • Altitude end
    6,417 ft
  • Grade
    -13.9%
  • Grade max
    -47.3%
  • Grade min
    15.4%
  • Distance climb
    299 ft
  • Distance down
    4,482 ft
  • Distance flat
    194 ft
  • Avg time
    00:09:05
  • Avg reverse time
    00:40:50
  • view trail stats
Status:
on Mar 1, 2025
Variable
Avg: 3.58 (23 votes)
Your vote: 0

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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)
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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
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  • < 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
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  • 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.
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Max Vehicle Width
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US Cell Coverage
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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
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      Directions to bon-scott trailhead (40.110480, -105.345960)
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      Bon Scott Trail Reports

      statusdatedescription
      Mar 1, 2025 @ 9:01am
      Mar 1, 2025
      		 a muddy patch or two, mostly in great shape
      Feb 7, 2025 @ 1:06pm
      Feb 7, 2025
      		 some muddy spots, all rideable
      Dec 7, 2024 @ 6:45pm
      Dec 7, 2024
      		 Top 3/4 prime, lower quarter is muddy and last bit is snowy.
      Nov 18, 2024 @ 6:37am
      Nov 18, 2024
      		 Hero dirt
      Nov 14, 2024 @ 9:08am
      Nov 14, 2024
      		 Some wet sections near the bottom but running great
      view all reports »

      Recent Ridelog Activity on Trail

      Past Week
      • 0 rides
      •  
      6 Months
      • 14 rides
      • 12 miles avg distance
      All
      • 126 rides
      • Last: Mar 25, 2025

      Photos

      more »
      798 |
      Mar 20, 2019 @ 10:12am
      Mar 20, 2019
      446 |
      Sep 17, 2020 @ 6:50am
      Sep 17, 2020

      Routes with this trail

      titledistance
      Intro to LHOHV featured9 miles

      Trail Products

      9 Reviews & Comments


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      Videos

      more »
      Bon Scott - Lefthand Canyon
      2:29 | 473 | Dec 23, 2022 , Boulder
      TwoRideTuesday #1 - Just Bon Scott!
      3:35 | 611 | Nov 8, 2020 , Boulder
      Chasing Brian down Bon Scott on the HARDTAIL!
      4:41 | 380 | Nov 8, 2020 , Boulder
      youtuber CO MTB ♦︎ | OHV Enduro - A tough...
      13:03 | 933 | May 1, 2018 , Boulder

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