close
3D
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
Max Vehicle Width
inches
US Cell Coverage
Legend
cell carrier legend

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.
disable
Only show trails with NO bikes.
enable

Save the current map location and zoom level as your default home location whenever this page is loaded.

Save
      King County is home to some of Washington's best and most famous mountain biking, from the Issaquah Alps, home to legendary Tiger Mountain & Duthie Hill, and new developments such as Raging River, to the XC heartland in the Maple Valley & Black Diamond lowlands, not only is King County Washington's most inhabited county, it also offers some of the most varied and interesting biking around. Now part of Evergreen Mountain Bike Alliance's 'Cascades to Sound' Chapter.
      Activities Click to view
      Region Details
      • 329
      • 62
      • 642
      • 429
      • 82
      • 23
      • 1

      Local Trail Association

      Stats

      Avg Trail Rating
      Trails (view details)
      2,375
      Trails Mountain Bike
      1,584
      Trails E-Bike
      301
      Trails Horse
      288
      Trails Hike
      2,091
      Trails Trail Running
      2,077
      Trails Dirtbike/Moto
      8
      Trails Observed Trials
      8
      Trails ATV/ORV/OHV
      8
      Trails Snowmobile
      1
      Trails Snowshoe
      30
      Trails Downhill Ski
      102
      Trails Backcountry Ski
      37
      Trails Nordic Ski
      40
      Total Distance
      1,663 mile
      Total Descent
      248,953 ft
      Total Vertical
      6,209 ft
      Highest Trailhead
      6,214 ft
      Reports
      26,933
      Photos
      5,720
      Ridden Counter
      526,068

      Outside Logo Articles

      Race Report & Photos: Sturdy Dirty Enduro at Raging River
      Jul 24, 2023 from pinkbike.com
      300 women took to the trails at Raging River State Forest for the all-women’s mountain bike race.
      Sub Regions

      Popular King County Mountain Biking Trails

      statustitledifficultyrating
      Master Link
      Tiger Mountain State Forest
      Quick Link
      Tiger Mountain State Forest
      Connector Trail
      Tiger Mountain State Forest
      Honey Badger
      Duthie Hill Mountain Bike Park
      Flow State Upper
      Raging River State Forest
      Flow State Lower
      Raging River State Forest
      Upward Mobility
      Raging River State Forest
      Flow Park Walk-up Trail
      Duthie Hill Mountain Bike Park
      Voodoo Child
      Duthie Hill Mountain Bike Park
      Parking lot connector trail
      Duthie Hill Mountain Bike Park
      Duthie Access Road to Clearing
      Duthie Hill Mountain Bike Park
      Poppin' Tops Lower
      Raging River State Forest
      Deuces Wild
      Duthie Hill Mountain Bike Park
      Jabulani / 2 Hi
      Duthie Hill Mountain Bike Park
      Ryan's Eternal Flow Line
      Duthie Hill Mountain Bike Park

      King County Mountain Bike Routes

      titleratingdistance
      Up, then Flow
      Raging River State Forest
      5 miles
      Olallie 1st Viewpoint Out-and-Back
      9 miles
      OTG to Ebad and out
      Tiger Mountain State Forest
      10 miles
      Tiger: The Milk Run
      Tiger Mountain State Forest
      10 miles
      Raging River - Full Lollipop
      Snoqualmie Ridge
      19 miles
      Canyon Creek DH Loop
      Raging River State Forest
      13 miles
      Tiger: Defanged - The Intermediate Loop
      Tiger Mountain State Forest
      13 miles
      East Tiger Summit to Side Hustle
      Tiger Mountain State Forest
      7 miles
      Raging Loop
      Snoqualmie Ridge
      13 miles
      Tolt-MacDonald XC/Jump Mix and Match
      Tolt MacDonald Park
      9 miles

      Recent Ride Log Activity in Region

      Today
      • 4 rides
      Yesterday
      • 161 rides
      Past Week
      • 1,223 rides

      Photos of King County Mountain Bike

      trail: NOTG
      1,669 |
      Sep 4, 2018 @ 2:05am
      Sep 4, 2018
      1,133 |
      May 25, 2018 @ 11:31am
      May 25, 2018
      trail: Master Link
      952 |
      Apr 13, 2017 @ 10:04pm
      Apr 13, 2017
      trail: Master Link
      1,283 |
      Apr 13, 2017 @ 10:04pm
      Apr 13, 2017
      trail: Paramount
      705 |
      Oct 19, 2016 @ 12:04am
      Oct 19, 2016
      | 1 comments
      trail: Voodoo Child
      766 |
      Jan 27, 2016 @ 6:16pm
      Jan 27, 2016
      trail: Gravy Train
      1,209 |
      Jan 11, 2012 @ 7:42am
      Jan 11, 2012
      1,709 |
      May 17, 2009 @ 12:27pm
      May 17, 2009
      | 6 comments

      Videos of King County Mountain Bike

      Predator, Tiger Mountain // E Saarela
      trail: Predator
      194 | Feb 13, 2024
      Wet wood sucks!! I should have known better
      52 | Nov 30, 2023
      Rainy PNW singletrack with friend and dog
      34 | Oct 25, 2023
      Riding to the trailhead
      17 | Oct 25, 2023
      Tiger Mtn: Megafauna and Predator bits
      trail: Megafauna
      48 | Oct 23, 2023
      Upper Poppin' Tops
      48 | Oct 7, 2023
      Friday Fail version Night Light Crash hit a hole
      26 | Oct 7, 2023
      Front wheel slid out a bit tried to correct...
      19 | Oct 5, 2023

      Current Trail Warnings

      statustraildateconditionuserinfo
      HLC
      Duthie Hill Mountain Bike Park
      Feb 20, 2024 @ 8:38am
      8 hours
      Idealtfornelius Large tree and debris down just before...
      National Forest Development Road 5510
      Feb 18, 2024 @ 5:04pm
      2 days
      Unknownandyjonson21 New gate at the bottom, it’s locked
      Raging Tiger
      Raging River State Forest
      Feb 18, 2024 @ 9:26am
      2 days
      IdealPaulmtb281 Lots of downed trees. Exit 27 trails were...

      Recent Trail Reports

      statustraildateconditioninfouser
      Cuss Hollow
      Duthie Hill Mountain Bike Park
      Feb 20, 2024 @ 8:41am
      8 hours
      IdealSome work was recently done on this to...tfornelius
      Braveheart
      Duthie Hill Mountain Bike Park
      Feb 20, 2024 @ 8:39am
      8 hours
      IdealSeveral small to medium size trees and...tfornelius
      Extra Terrestrial
      Tiger Mountain State Forest
      Feb 19, 2024 @ 11:42pm
      17 hours
      Wet No snow or mud, wet hero dirt2thebrim
      Poppin' Tops Lower
      Raging River State Forest
      Feb 19, 2024 @ 11:06pm
      17 hours
      Idealperfect conditions, 99% drainedOZmbwY
      Powerlink
      Tiger Mountain State Forest
      Feb 19, 2024 @ 5:23pm
      23 hours
      DryClear all the way uprsapp240
      Side Hustle
      Tiger Mountain State Forest
      Feb 19, 2024 @ 5:22pm
      23 hours
      VariableTree is gone, thanks sawyers!rsapp240
      ATLAS
      Tiger Mountain State Forest
      Feb 19, 2024 @ 4:16pm
      1 day
      IdealTrees are cleared but there is a lot of...Zandroid
      Upward Mobility
      Raging River State Forest
      Feb 19, 2024 @ 1:34pm
      1 day
      VariableLooks like they cleared all the downed...KZuc13
      Master Link
      Tiger Mountain State Forest
      Feb 19, 2024 @ 10:45am
      1 day
      Dry Small tree down across trail, can...Chels1430
      Parking Lot Connector
      Olallie State Park
      Feb 19, 2024 @ 5:07am
      1 day
      Idealjudge-shredd

      Activity Feed

      usernameactiontypetitledate
      Rek-lisKylewishlisttrailactivity #49360841
      Feb 20, 2024 @ 4:30pm
      5 mins
      Rek-lisKylewishlisttrailactivity #49360825
      Feb 20, 2024 @ 4:29pm
      6 mins
      tforneliusaddreportactivity #49357984 and 2 more
      Feb 20, 2024 @ 8:38am
      8 hours
      aaronspruitaddreportactivity #49356830 and 4 more
      Feb 20, 2024 @ 6:54am
      10 hours
      cove24wishlistrouteactivity #49344431
      Feb 20, 2024 @ 12:07am
      16 hours

      Recent Comments

      usernametypetitlecommentdate
      boxxeracetrailGoose ChaseThanks Elly for the idea!
      Feb 12, 2024 @ 8:18pm
      Feb 12, 2024
      DddZr9trailBuyer's RemorseBigger gaps with a cool between the trees step...
      Feb 11, 2024 @ 11:52pm
      Feb 11, 2024
      DddZr9trailThe Maury IncidentVery nice line better to work through it with...
      Feb 11, 2024 @ 11:50pm
      Feb 11, 2024
      DddZr9trailDamnationDo NOT ride this it is in major need of repair...
      Feb 6, 2024 @ 11:18pm
      Feb 6, 2024
      remnant44trailBig BeaverI enjoy this trail. If you don't enjoy...
      Feb 5, 2024 @ 4:04pm
      Feb 5, 2024

      Local Badges


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike1,5831,177 mile137,280 ft454 miles5,023 ft
      5,55026,81319667,974
      E-Bike301332 miles30,338 ft116 miles4,964 ft
      1017,41484,864
      Horse288268 miles25,853 ft99 miles4,678 ft
      6,0255
      Hike2,0911,549 mile175,719 ft553 miles5,764 ft
      15324,540835,125
      Trail Running2,0771,542 mile175,446 ft551 miles5,764 ft
      824,531438,459
      Dirtbike/Moto814 miles1,509 ft4 miles3,301 ft
      5,73121
      Observed Trials814 miles1,509 ft4 miles3,301 ft
      12313
      ATV/ORV/OHV814 miles1,509 ft4 miles3,301 ft
      5,73113
      Snowmobile11,391 ft36 ft
      17
      Snowshoe3028 miles2,201 ft6 miles5,023 ft
      2545
      Downhill Ski10237 miles35,331 ft29 miles2,835 ft
      281,544
      Backcountry Ski3719 miles13,205 ft9 miles5,371 ft
      122193
      Nordic Ski4028 miles3,875 ft11 miles3,911 ft
      42169
      • By k-w & contributors
      • Admins: EMBA, NMA, EMBA-Staff, codyolsen, pawalker, jmahler, alextrails9, sanfret, mattcr, EMBA-C2S
      • #22529 - 17,456 views

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