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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)
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
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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
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
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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.
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      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
      • 343
      • 63
      • 678
      • 385
      • 56
      • 18

      Local Trail Association

      Stats

      Avg Trail Rating
      Trails (view details)
      2,365
      Trails Mountain Bike
      1,686
      Trails E-Bike
      721
      Trails Horse
      287
      Trails Hike
      2,193
      Trails Trail Running
      2,169
      Trails Dirtbike/Moto
      8
      Trails Observed Trials
      8
      Trails ATV/ORV/OHV
      8
      Trails Snowmobile
      1
      Trails Snowshoe
      30
      Trails Downhill Ski
      107
      Trails Backcountry Ski
      37
      Trails Nordic Ski
      43
      Total Distance
      1,706 miles
      Total Descent
      253,858 ft
      Total Vertical
      6,441 ft
      Highest Trailhead
      6,446 ft
      Reports
      30,236
      Photos
      6,313
      Ridden Counter
      641,088

      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
      Connector Trail
      Tiger Mountain State Forest
      Quick Link
      Tiger Mountain State Forest
      Flow State Lower
      Raging River State Forest
      Flow State Upper
      Raging River State Forest
      Upward Mobility
      Raging River State Forest
      Honey Badger
      Duthie Hill Mountain Bike Park
      Poppin' Tops Lower
      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
      Jabulani
      Duthie Hill Mountain Bike Park
      Deuces Wild
      Duthie Hill Mountain Bike Park
      Ryan's Eternal Flow Line
      Duthie Hill Mountain Bike Park

      King County Mountain Bike Routes

      titleratingdistance
      EMBA Festival4 Poppin Tops and Flow State
      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
      Full Lollipop
      Raging River State Forest
      19 miles
      Tiger: Defanged - The Intermediate Loop
      Tiger Mountain State Forest
      13 miles
      East Tiger Summit to Side Hustle
      Tiger Mountain State Forest
      7 miles
      Tiger Black and Blue
      Tiger Mountain State Forest
      7 miles
      Fire Road to Side Hustle
      Tiger Mountain State Forest
      7 miles
      Highlands to Seattle
      Grand Ridge Park
      26 miles

      Recent Ride Log Activity in Region

      Today
      • 0 rides
      Yesterday
      • 100 rides
      Past Week
      • 598 rides

      Photos of King County Mountain Bike

      trail: NOTG
      1,996 |
      Sep 4, 2018 @ 2:05am
      Sep 4, 2018
      1,317 |
      May 25, 2018 @ 11:31am
      May 25, 2018
      trail: Master Link
      1,070 |
      Apr 13, 2017 @ 10:04pm
      Apr 13, 2017
      trail: Master Link
      1,452 |
      Apr 13, 2017 @ 10:04pm
      Apr 13, 2017
      trail: Paramount
      800 |
      Oct 19, 2016 @ 12:04am
      Oct 19, 2016
      | 1 comments
      trail: Voodoo Child
      1,047 |
      Jan 27, 2016 @ 6:16pm
      Jan 27, 2016
      trail: Gravy Train
      1,338 |
      Jan 11, 2012 @ 7:42am
      Jan 11, 2012
      1,898 |
      May 17, 2009 @ 12:27pm
      May 17, 2009
      | 6 comments

      Videos of King County Mountain Bike

      Follow me!
      trail: Jabulani
      35 | Jan 28, 2025
      Declan's freeride video circa 2016
      8 | Dec 23, 2024
      Fern Roll
      trail: Predator
      | Aug 30, 2024
      Fern Roll
      trail: Predator
      20 | Aug 28, 2024
      Tiger Mountain Fern Crash
      trail: Predator
      9 | Aug 28, 2024
      First Recording (Boxley Creek)
      trail: Mainline
      24 | Aug 14, 2024
      Upper Silver Fir DH
      168 | Jul 12, 2024
      Predator, Tiger Mountain // E Saarela
      trail: Predator
      258 | Feb 13, 2024

      Current Trail Warnings

      statustraildateconditionuserinfo
      NWT Bypass
      Tiger Mountain State Forest
      Feb 14, 2025 @ 11:39am
      3 days
      UnknownSteveg206 Tree down across NW Timber bypass...
      Hall Pass
      Big Finn Hill Park
      Jan 29, 2025 @ 3:44pm
      Jan 29, 2025
      VariablekayakbikerVery Large tree still blocking trail....
      Tokyo Drift
      Tokul West
      Jan 21, 2025 @ 6:35pm
      Jan 21, 2025
      IcyGreg58yrLn log down on the trail

      Recent Trail Reports

      statustraildateconditioninfouser
      Grand Ridge
      Grand Ridge Park
      Feb 16, 2025 @ 11:59am
      17 hours
      Snow Packedsnow starts at 1000ft elevation. should...matthew1nJG8T
      Jabulani
      Duthie Hill Mountain Bike Park
      Feb 15, 2025 @ 1:12pm
      2 days
      Variablechunkynoodlesoup
      Deuces Wild
      Duthie Hill Mountain Bike Park
      Feb 15, 2025 @ 1:11pm
      2 days
      Snow Cover Partialchunkynoodlesoup
      Step It Up
      Duthie Hill Mountain Bike Park
      Feb 15, 2025 @ 1:11pm
      2 days
      Snow Cover Partialchunkynoodlesoup
      PNWheel
      Tokul East
      Feb 14, 2025 @ 4:40pm
      3 days
      VariableA little dry actually. All clear.loamchompsghee
      Ryan's Eternal Flow Line
      Duthie Hill Mountain Bike Park
      Feb 12, 2025 @ 6:56pm
      Feb 12, 2025
      Drytfornelius
      Beaver Pond
      Tokul West
      Feb 10, 2025 @ 7:59pm
      Feb 10, 2025
      Variable Bottom 2 sections running OK, some mud...loamchompsghee
      Pink Beaver
      Tokul West
      Feb 10, 2025 @ 7:57pm
      Feb 10, 2025
      Snow PackedMostly passable packed snow, makes it...loamchompsghee
      Clear Cut
      Tokul West
      Feb 10, 2025 @ 7:56pm
      Feb 10, 2025
      IdealShralpableloamchompsghee
      Dog Wash
      Tokul West
      Feb 10, 2025 @ 7:55pm
      Feb 10, 2025
      VariableWet in the usual spots, but snow free on...loamchompsghee

      Activity Feed

      usernameactiontypetitledate
      matthew1nJG8Taddreportactivity #66311435
      Feb 16, 2025 @ 11:59am
      17 hours
      aaparkerwishlistregionactivity #66302434
      Feb 16, 2025 @ 9:29am
      19 hours
      lukeolson13wishlistregionactivity #66299721
      Feb 16, 2025 @ 8:45am
      20 hours
      lukeolson13wishlistregionactivity #66299664
      Feb 16, 2025 @ 8:44am
      20 hours
      enumclawaddvideoactivity #66287500
      Feb 16, 2025 @ 5:16am
      24 hours

      Recent Comments

      usernametypetitlecommentdate
      GunrocksreportIron BrigadeThe tree by Anaconda is gone, but the other is...
      Jan 29, 2025 @ 2:48pm
      Jan 29, 2025
      ManzaninoreportOddly Unsatisfying ConnectorThis big tree is still there 1/26/25
      Jan 26, 2025 @ 8:23pm
      Jan 26, 2025
      aaa0124trail30350 rd.As
      Jan 26, 2025 @ 11:39am
      Jan 26, 2025
      MoonscapetrailEast Bound And DownAmazing trail. Steep rooty tech with some very...
      Jan 24, 2025 @ 11:50am
      Jan 24, 2025
      loamchompsgheereportPreston RR GradeYou guys kick ass, thanks for keeping...
      Jan 22, 2025 @ 7:22am
      Jan 22, 2025

      Local Badges


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike1,5701,216 miles142,051 ft471 miles5,023 ft
      6,35530,445191174,898
      E-Bike721492 miles52,789 ft185 miles4,964 ft
      1319,7121512,639
      Horse287268 miles25,817 ft98 miles4,678 ft
      6,14515
      Hike2,1851,581 miles179,052 ft563 miles5,764 ft
      16727,7558713,658
      Trail Running2,1691,573 miles178,602 ft561 miles5,764 ft
      927,7174424,906
      Dirtbike/Moto814 miles1,509 ft4 miles3,301 ft
      5,80847
      Observed Trials814 miles1,509 ft4 miles3,301 ft
      12738
      ATV/ORV/OHV814 miles1,509 ft4 miles3,301 ft
      5,806110
      Snowmobile11,391 ft36 ft
      273
      Snowshoe3028 miles2,175 ft6 miles5,023 ft
      3786
      Downhill Ski10737 miles35,331 ft29 miles3,812 ft
      404,742
      Backcountry Ski3719 miles13,205 ft9 miles5,371 ft
      134823
      Nordic Ski4329 miles4,049 ft11 miles3,911 ft
      432266
      • By k-wTF Pro & contributors
      • Admins: EMBA, NMA, EMBA-Staff, codyolsen, jmahler, alextrails9, sanfret, mattcr, EMBA-C2S, EMBA-C2S
      • #22529 - 20,679 views

      Downloading of trail gps tracks in kml & gpx formats is enabled for King County.
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