more stats
1.5 miles
Distance
156 ft
Climb
-516 ft
Descent
00:33:21
Avg time
-361 ft
Altitude change
1,950 ft
Altitude min
2,428 ft
Altitude max
2,310 ft
Altitude start
1,950 ft
Altitude end
-4.469%
Grade
-28.035%
Grade max
20.995%
Grade min
2,347 ft
Distance climb
4,918 ft
Distance down
759 ft
Distance flat
00:33:21
Avg time

Jerntjern Details

  • Activities
    • Mountain Bike
    • Hike
    • Trail Running
  • Riding Area
    Kongsberg
  • Difficulty Rating
    Black Diamond Rate
  • Local Popularity
    60 in Mountain Biking [+]
    • 5 in Trail Running
    • 5 in Hiking
  • Global Ranking
    #66163 in Mountain Biking [+]
    • #158394 in Trail Running
    • #154852 in Hiking
  • Trail Type
    Singletrack
  • Bike Type
    AM
  • Direction
    Downhill Primary
    Popular Direction Shown
  • Climb Difficulty
    Black Diamond
  • Physical Rating
    Hard
  • Dogs Allowed
    Yes
  • TTFs on Trail
    Drop, Ladder Bridge, Rock Face, Rock Garden

A fantastic mountain trail. Entry point can be difficult to spot. Starts with a short hike-a-bike before the terrain opens up. First half is quite techinical and demanding, but rideable. Magnificent view from the highest points. Many small mountain lakes. From there down it is a wonderful endruo trail, but requires some pedalling. Lots of exciting drops, roots and other challenges before you end up at Haus Sachsen. Watch out for hikers.

Access Info

Drive or pedal up to Knutehytta, hve lunsj, roll back the gravel road a couple of hundred metres before the trail begins through the bush on the left.

Recent Activity on Trail

Past Week
  • 1 rides
  • 29 miles average
6 Months
  • 5 rides
  • 21 miles avg distance
All
  • 10 rides
  • Last: Aug 25, 2026
c1c2c3c4
January
February
March
April
May
June
July
August
September
October
November
December
Status:
on May 26, 2026
Variable
Avg: 3.98 (1 votes)
Your vote: 0

view (46)
close
  • Basemap  Map 
    • Pro
    • Pro
    • Pro
    • Pro
    • Pro
    • Pro
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 activity logs 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 users are riding a trail in its intended direction.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
  • bi-directional trail
  • no data
Trail Last Ridden
Trailforks scans activity logs 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 activity logs 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 activities = 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
Activity Recordings
Trailforks uses anonymized public activity data. ?
Activity Recordings
Trailforks uses anonymized public activity data. ?
Winter Trails
Warning A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
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 users jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status

Service Road Atlas is a free to use, community-driven service for viewing and creating reports on the numerous back-country service roads around B.C. and Alberta.

map legend
Slope Aspect
Direction the slope faces
Flat N NE E SE S SW W NW
Trails Deemphasized
Trails are shown in grey.
disable
Only show trails with no bike usage.
Enable
Suggested Layers
Based on selected activity type

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

    Save
        Directions to jerntjern trailhead (59.670951, 9.544061)
        View on Discover Map

        Photos

        No photos have been added for Jerntjern yet, add a photo.

        Videos

        no videos have been added for Jerntjern yet, add a video.
        4.0 ★★★★★
        1 Ratings
        5 ★
        4 ★ 100%
        3 ★
        2 ★
        1 ★

        Reviews / Comments

        No reviews yet, be the first to write a review or ask a question.
        Use trail reports to comment on trail conditions.


        We hope you've been enjoying Trailforks!

        Create a FREE account to view trail comments and much more.

        Create a Free Account

        Nearby Trails

        Kongsberg

        • By knutspeed & contributors
        • #125631 - 640 views

        Frequently Asked Questions About Jerntjern

        ▼ Where is Jerntjern located?
        Jerntjern is located in Kongsberg, Norway. It is part of the Kongsberg trail network. The trailhead is located at coordinates 59.67095, 9.54406.
        ▼ How hard is Jerntjern?
        Jerntjern is rated as Black Diamond difficulty. The physical rating is Hard. The average grade is 4.469%. The climb difficulty is rated Black Diamond.
        ▼ What is the elevation gain for Jerntjern?
        Jerntjern has 156 ft of elevation gain. The trail has 516 ft of elevation descent. The elevation ranges from 1,950 ft to 2,428 ft.
        ▼ Is Jerntjern a point to point trail?
        Jerntjern is not a point to point trail. The direction is Downhill Primary. The trail type is singletrack.
        ▼ How long is Jerntjern?
        Jerntjern is 1.5 miles long. The trail type is singletrack.
        ▼ Are dogs allowed on Jerntjern?
        Yes, dogs are allowed on Jerntjern. Please keep dogs on a leash where required and clean up after them.
        ▼ How do I access Jerntjern? Where is the closest parking trailhead?
        The closest parking and trailhead locations to Jerntjern are: View all parking locations in the area.
        ▼ How long does it take to ride Jerntjern?
        Based on recorded activities, it takes an average of 25 minutes to ride Jerntjern. The trail is 1.5 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
        ▼ How busy is Jerntjern?
        Jerntjern is a moderately popular trail. There have been 50 recorded activities on this trail. The trail has received 44 check-ins. View recent activity on this trail.

        Hit the Trail

        Open in App

        Get this trail on your phone instantly.
        open trail in app

        Download Trail

        Save to wishlist, Garmin & download.
        save the trail

        Find Related Routes

        Find routes and users activities that include this trail.
        find routes for this trail

        You must enter a description before submitting.