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

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

  • 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 Groomed
  • 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
  • Table or Bench eBike Charging Point
  • Other Other
      No description for Marin County has been added yet! Login or register to submit one.
      Links
      Region Details
      • 78
      • 4
      • 42
      • 87
      • 48
      • 3


      Open on 2 days

      Stats

      Avg Trail Rating
      Trails (view details)
      311
      Trails Mountain Bike
      275
      Trails E-Bike
      2
      Trails Hike
      314
      Trails Trail Running
      314
      Trails Horse
      1
      Total Distance
      454 miles
      Total Descent
      148,444 ft
      Total Vertical
      2,460 ft
      Highest Trailhead
      2,465 ft
      Reports
      929
      Photos
      487
      Ridden Counter
      16,671

      Photos of Marin County Mountain Bike

      101 |
      Feb 14, 2018 @ 11:22pm
      Feb 14, 2018
      403 |
      May 4, 2016 @ 12:11am
      May 4, 2016
      798 |
      Feb 6, 2015 @ 9:41am
      Feb 6, 2015
      | 3 comments
      417 |
      Feb 6, 2015 @ 9:39am
      Feb 6, 2015

      Videos of Marin County Mountain Bike

      Good time at Camp Tamarancho
      0:08 | 142 | Feb 12, 2018
      Big Rock
      0:09 | 90 | Sep 27, 2017
      Chameleon Maiden Voyage
      0:03 | 139 | Sep 10, 2017
      Crevice of Doom
      0:08 | 818 | Sep 10, 2017

      Current Trail Warnings

      statustraildateconditionuserinfo
      Queenstone Fire Road
      Big Rock / Lucas Valley
      Jul 20, 2019 @ 8:20pm
      Jul 20, 2019
      Drycurcuminclosed mon-fri 9am - 4pm until Sept 4,...

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      user #1635855clarencecainaddridelogAug 17, 2019 ride log
      Aug 17, 2019 @ 1:45pm
      32 sec
      user #1244269sanfretaddridelogAug 17, 2019 ride log
      Aug 17, 2019 @ 1:45pm
      38 sec
      user #1362727cordlayeraddridelogAug 17, 2019 ride log
      Aug 17, 2019 @ 1:35pm
      10 mins
      user #1141342nealdessaddridelogAug 17, 2019 ride log
      Aug 17, 2019 @ 1:31pm
      14 mins
      user #1746549Menina247addridelogAug 17, 2019 ride log
      Aug 17, 2019 @ 1:23pm
      22 mins

      Recent Comments

      usernametypetitlecommentdate
      user #954607tassajaRJtrailTenderfootFirst turn at top has a gnarly root section...
      Aug 10, 2019 @ 1:03pm
      Aug 10, 2019
      user #954607tassajaRJtrailRocky Ridge Fire RdI assume it’s a black diamond cause it’s...
      Aug 10, 2019 @ 1:00pm
      Aug 10, 2019
      user #794672acyclisttrailOld StageThe first pleasant fire road I've ridden in...
      Aug 4, 2019 @ 10:48pm
      Aug 4, 2019
      user #794672acyclisttrailHoo-Koo-E-KooA couple short steeper sections but otherwise...
      Aug 4, 2019 @ 10:46pm
      Aug 4, 2019
      user #794672acyclisttrailMiwok TrailDon't know how you would get to this trail...
      Aug 4, 2019 @ 10:43pm
      Aug 4, 2019

      Local Badges

      • By canadaka Trailforks Plus & contributors
      • Admins: ericfoltz, jpmcghee, brianpetry, A4B, MCBC
      • #4331 - 7,513 views

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