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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Inadequate
  • 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
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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
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.
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      Activities Click to view
      Region Details
      • 7
      • 3
      • 67
      • 11
      • 3

      Region Status
      Open as of Jun 24, 2022
      Local Trail Association

      Stats

      Avg Trail Rating
      Trails (view details)
      96
      Trails Mountain Bike
      91
      Trails E-Bike
      28
      Trails Hike
      95
      Trails Trail Running
      95
      Total Distance
      32 miles
      Total Descent
      2,093 ft
      Total Vertical
      420 ft
      Highest Trailhead
      432 ft
      Reports
      61
      Photos
      49
      Ridden Counter
      7,600
      Sub Regions

      Recent Ride Log Activity in Region

      Today
      • 0 rides
      Yesterday
      • 1 rides
      Past Week
      • 11 rides

      Photos of Seatac Mountain Bike

      63 |
      Feb 24, 2021 @ 3:25pm
      Feb 24, 2021
      56 |
      Feb 24, 2021 @ 3:24pm
      Feb 24, 2021
      57 |
      Feb 24, 2021 @ 3:24pm
      Feb 24, 2021
      62 |
      Feb 24, 2021 @ 3:24pm
      Feb 24, 2021
      trail: Daytona
      70 |
      Jun 26, 2020 @ 2:34pm
      Jun 26, 2020
      trail: Tub Lake
      80 |
      Jun 26, 2020 @ 1:26pm
      Jun 26, 2020
      trail: Tub Lake
      111 |
      Jun 26, 2020 @ 1:24pm
      Jun 26, 2020
      trail: SST Ridgeline
      281 |
      Apr 22, 2020 @ 3:41pm
      Apr 22, 2020

      Videos of Seatac Mountain Bike

      greenlake dirt jumps
      trail: Dirt Jumps
      0:31 | 281 | Jul 1, 2015
      Poco dirt jumps
      trail: Dirt Jumps
      0:23 | 190 | Feb 22, 2015
      Redmond Bike Park 2014
      trail: Dirt Jumps
      1:30 | 322 | Oct 21, 2014
      DJ on DH
      trail: Dirt Jumps
      0:48 | 311 | Apr 25, 2014
      Greenlake Dirt Jumps
      trail: Dirt Jumps
      0:18 | 150 | Apr 4, 2014
      Greenlake
      trail: Dirt Jumps
      1:35 | 248 | Oct 7, 2013
      The Grotto dirt jumps
      trail: Dirt Jumps
      0:34 | 406 | Mar 12, 2013
      One Sunny Day
      trail: Dirt Jumps
      1:30 | 140 | Feb 3, 2013

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      user #2522336BarryWalsteadwishlisttrailGreen River Trail
      Jan 5, 2023 @ 7:50pm
      Jan 5, 2023
      user #833029djtaborwishlisttrailGreen River Trail (Tukwila North) and 1 more
      Dec 20, 2022 @ 6:32pm
      Dec 20, 2022
      user #3209381iC11s0wishlisttrailGreen River Trail
      Oct 29, 2022 @ 6:57pm
      Oct 29, 2022
      user #3197115bH68WowishlistregionNorth SeaTac Park
      Oct 6, 2022 @ 8:17pm
      Oct 6, 2022
      user #3195861NathanGAyjhwishlistregionSouth Seatac
      Oct 1, 2022 @ 12:48am
      Oct 1, 2022

      Recent Comments

      usernametypetitlecommentdate
      user #2381121SpeedysiegltrailSpace Mountain's RevengeMost exciting trail here!
      Aug 22, 2022 @ 12:44pm
      Aug 22, 2022
      user #555326b0ingtrailSpace Mountain's RevengeDry but uninspiring.
      Feb 24, 2021 @ 3:26pm
      Feb 24, 2021
      user #2361005Amarat123trailLoose ChainWas riding this trail system, happened upon...
      Aug 16, 2020 @ 6:07pm
      Aug 16, 2020
      user #1388838ryngtrail200th AccessThis access trail is locked. The whole area...
      Aug 30, 2018 @ 7:38pm
      Aug 30, 2018

      Local Badges

      Bike & Skill Parks

      nametypecityrating
      North SeaTac BMXskill parkSeatac

      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike9131 miles1,982 ft8 miles420 ft
      #624#334496116,662
      E-Bike285 miles174 ft1 mile315 ft
      46143
      Hike9532 miles2,067 ft8 miles420 ft
      #468#283581113
      Trail Running9532 miles2,067 ft8 miles420 ft
      #468#28458174
      • By jmahler TRAILFORKS & contributors
      • Admins: EMBA, NMA, codyolsen, boxxerace, pawalker, jmahler, Alexbeard9, sanfret, mattcr
      • #13188 - 1,923 views

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