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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
  • Sight Sight
  • Restrooms Restrooms
  • eBike Charging Point eBike Charging Point
  • Water Fountain/Source Water Fountain/Source
  • Gate Gate
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Ladder Ladder
  • Stairs Stairs
  • Bridge Bridge
  • Camping Camping
  • Cabin Cabin
  • Lodge Lodge
  • Bear Cache Bear Cache
  • Dock Dock
  • Ranger Station Ranger Station
  • Summit Summit
  • Other Other
      No description for Fairfax County has been added yet! Login or register to submit one.
      Region Details
      • 10
      • 8
      • 40
      • 81
      • 6

      Region Status
      Open as of Oct 9, 2019 ago

      Stats

      Avg Trail Rating
      Trails (view details)
      160
      Trails Mountain Bike
      145
      Trails E-Bike
      1
      Trails Hike
      156
      Trails Trail Running
      156
      Trails Horse
      1
      Total Distance
      151 miles
      Total Descent
      12,240 ft
      Total Vertical
      461 ft
      Highest Trailhead
      464 ft
      Reports
      932
      Photos
      91
      Ridden Counter
      9,438

      Photos of Fairfax County Mountain Bike

      trail: Boss
      6 |
      Sep 27, 2019 @ 2:21pm
      Sep 27, 2019
      13 |
      Sep 16, 2019 @ 8:08am
      Sep 16, 2019
      18 |
      Sep 15, 2019 @ 8:24am
      Sep 15, 2019
      14 |
      Sep 15, 2019 @ 8:24am
      Sep 15, 2019

      Videos of Fairfax County Mountain Bike

      Gimbal Testing
      trail: Yard Sale
      1:14 | 361 | Aug 11, 2017
      Blue Trail Drops
      0:09 | 196 | Jan 29, 2017
      last drop and run out
      trail: Loop 2
      0:24 | 398 | Aug 16, 2015
      F&%$#*& uphill switchbacks......
      trail: Loop 2
      1:21 | 209 | Aug 16, 2015

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      user #1639444Wash2160riddentrailBoss
      Oct 15, 2019 @ 1:01pm
      Oct 15, 2019
      user #1877438patdenniscommenttrailApache
      Oct 13, 2019 @ 5:31pm
      Oct 13, 2019
      user #1877438patdennisvotetrailApache
      Oct 13, 2019 @ 5:31pm
      Oct 13, 2019
      user #1170911chalky101votetrailLoop 2
      Oct 9, 2019 @ 6:57pm
      Oct 9, 2019
      user #1251136AvidTrailRidervotetrailBlack Loop and 1 more
      Oct 9, 2019 @ 5:55pm
      Oct 9, 2019

      Recent Comments

      usernametypetitlecommentdate
      user #1877438patdennistrailApacheGreat trail. Semi off camber log roll is a...
      Oct 13, 2019 @ 5:31pm
      Oct 13, 2019
      user #1332627PTyliszczaktrailBull Run Occoquan TrailWhile the section close to Fountainhead is...
      Sep 22, 2019 @ 6:04am
      Sep 22, 2019
      user #1920380pphhaazzeetrailFlowJoeIt's got a bit of everything and really fun.
      Sep 6, 2019 @ 4:10pm
      Sep 6, 2019
      user #1044783frankraititrailMarc Genberg TrailThanks for the comments, Will. We have been...
      Jul 25, 2019 @ 2:36pm
      Jul 25, 2019
      user #1100035willniccollstrailMarc Genberg TrailThere is good flow to be found on this trail. ...
      Jul 19, 2019 @ 7:17am
      Jul 19, 2019

      Local Badges

      • By brenthillier NSMBA TRAILFORKS Plus & contributors
      • Admins: chuktA, WillieJacobsz, adaptivemike, Virginia, theWVPedaler, MORE
      • #16477 - 765 views
      • fairfax county activity log | embed map of Fairfax County mountain bike trails | fairfax county mountain biking points of interest
      • subscribe 3d map

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