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Trail Conditions
  • Unknown
  • 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 Ridden Direction

The intendid direction a trail should be ridden.

  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction

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 or Major Issue / Red

  • 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 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
  • Other Other
      Historic Park that offers hiking, biking and horse back riding. Most the trails are easy difficulty and provide access to the the old orchards and lakes. There are some climbing trails that are good for training and fitness.
      Region Details
      • 1
      • 1
      • 11
      • 3


      Caution on Dec 11, 2018

      Stats

      Avg Trail Rating
      Global Ranking
      #3,338
      State Ranking
      #161
      Trails (view details)
      16
      Trails Mountain Bike
      16
      Trails Hike
      16
      Trails Trail Running
      16
      Total Distance
      14 miles
      Total Descent Distance
      5 miles
      Total Descent
      2,757 ft
      Total Vertical
      1,649 ft
      Highest Trailhead
      2,248 ft
      Reports
      28
      Photos
      28
      Ridden Counter
      94

      Popular Jack London State Historic Park Trails

      view all trails »

      Photos of Jack London State Historic Park Mountain Bike

      trail: Camp Via
      13 |
      Jun 21, 2018 @ 6:36pm
      Jun 21, 2018
      Camp Via, Petaluma
      trail: Sonoma Ridge
      30 |
      May 28, 2018 @ 5:07pm
      May 28, 2018
      Sonoma Ridge, Petaluma
      trail: Sonoma Ridge
      24 |
      May 28, 2018 @ 5:06pm
      May 28, 2018
      Sonoma Ridge, Petaluma
      trail: Sonoma Ridge
      21 |
      May 28, 2018 @ 5:04pm
      May 28, 2018
      Sonoma Ridge, Petaluma
      more photos »

      Videos of Jack London State Historic Park Mountain Bike

      Bay Trail Edit
      trail: Bay Trail
      1:32 | 305 | Dec 14, 2008
      more videos »

      Recent Comments

      usernametypetitlecommentdate
      user #1472644TonymosatrailCoon TrapSimply the shortest way to the ridge from Glen...
      Jul 11, 2018 @ 9:57pm
      Jul 11, 2018
      user #1501000Dk563trailSonoma RidgeGreat, narrow, ridge single track.
      Apr 1, 2018 @ 9:09pm
      Apr 1, 2018
      user #1501000Dk563trailCoon TrapLots of hike a bike sections where it is...
      Apr 1, 2018 @ 9:08pm
      Apr 1, 2018
      user #1472644TonymosareportFern LakeFern Lake has a small flow trail that...
      Mar 5, 2018 @ 9:13am
      Mar 5, 2018
      user #1472644TonymosatrailBay TrailThis is in Sonoma County, not Napa County.
      Feb 20, 2018 @ 3:29pm
      Feb 20, 2018
      more »

      Recent Activity

      usernameactiontypetitledate
      user #1693847cooltooladdridelogMay 9, 2018 ride log and 2 more
      Jan 7, 2019 @ 9:48am
      Jan 7, 2019
      user #1631569Dipp-eraddridelogDec 31, 2018 ride log
      Dec 31, 2018 @ 3:46pm
      Dec 31, 2018
      user #1631569Dipp-eraddridelogDec 30, 2018 ride log
      Dec 30, 2018 @ 2:40pm
      Dec 30, 2018
      user #1046871g-landeraddridelogDec 12, 2018 ride log
      Dec 12, 2018 @ 2:56pm
      Dec 12, 2018
      user #1472644TonymosaaddreportCoon Trap and 1 more
      Dec 11, 2018 @ 8:59pm
      Dec 11, 2018
      view more »
      • By todd Plus & contributors
      • Admins: REMBA, SCTC, REMBA, ibiscycles
      • #20658 - 604 views

      Downloading of trail gps tracks in kml & gpx formats is enabled for Jack London State Historic Park.
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