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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
inches

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
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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      No description for Grefsenkollen has been added yet! Login or register to submit one.
      Primary Trail Type: Cross-Country
      Land Status: Regional Recreation Area
      This region uses the Uk/Euro style trail grading system.
      Activities Click to view
      Region Details
      • 7
      • 2
      • 1

      Region Status
      Caution as of Nov 20, 2021

      Stats

      Avg Trail Rating
      Trails (view details)
      13
      Trails Mountain Bike
      13
      Trails E-Bike
      1
      Trails Hike
      13
      Trails Trail Running
      13
      Trails Horse
      2
      Total Distance
      7 miles
      Total Descent Distance
      5 miles
      Total Descent
      2,427 ft
      Total Vertical
      704 ft
      Highest Trailhead
      1,468 ft
      Reports
      91
      Photos
      5
      Ridden Counter
      214

      Photos of Grefsenkollen Mountain Bike

      119 |
      Apr 3, 2020 @ 11:58pm
      Apr 3, 2020
      105 |
      Apr 3, 2020 @ 11:58pm
      Apr 3, 2020
      93 |
      Apr 3, 2020 @ 11:58pm
      Apr 3, 2020
      104 |
      Feb 29, 2020 @ 5:11am
      Feb 29, 2020

      Videos of Grefsenkollen Mountain Bike

      Mord i skogen
      1:16 | 45 | Apr 20, 2020

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      user #1348565thevidsaddreportGrefsen Cabin and 1 more
      Jan 4, 2022 @ 5:09am
      Jan 4, 2022
      user #1348565thevidsaddreportGrefsen Cabin and 2 more
      Dec 20, 2021 @ 11:11am
      Dec 20, 2021
      user #1881826pepiteaddreportAkebakken til toppen av Oslo Skisenter and 2 more
      Nov 20, 2021 @ 7:53am
      Nov 20, 2021
      user #1881826pepiteaddreportAkebakken til toppen av Oslo Skisenter and 1 more
      Nov 13, 2021 @ 9:54am
      Nov 13, 2021
      user #2703040onenetsirkaddreportTrail and 1 more
      Oct 31, 2021 @ 12:17pm
      Oct 31, 2021

      Nearby Areas

      namedistance
      Lillomarka 12 913.2 km
      Frognerseteren 6 15 2 14.7 km
      Gjelleråsen 3 14.9 km
      Østmarka Nord 15.8 km
      Østmarka Vest 1 146.8 km

      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike137 miles2,428 ft5 miles705 ft
      #6,141#505911,806
      E-Bike11 mile364 ft1 mile367 ft
      #1339024
      Hike137 miles2,428 ft5 miles705 ft
      #5,291#469125
      Trail Running137 miles2,428 ft5 miles705 ft
      #5,286#469119
      Horse21 mile7 ft285 ft397 ft
      • By ochoo & contributors
      • Admins: LRGA, pnyberg
      • #30379 - 1,357 views

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