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Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Partial
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
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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.
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
Radar Time
Activity Recordings
Trailforks uses anonymized public activity data.
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Activity Recordings
Trailforks uses anonymized public activity data.
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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
![map legend]()
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.
Slope Aspect
Direction the slope faces
Trails Deemphasized
Trails are shown in grey.
Only show trails with no bike usage.
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.
SaveFrogner trails and routes are listed on Trailforks with interactive trail maps, difficulty ratings, photos, and user-reported trail conditions. Supported activity types include Mountain Biking, Hiking, Trail Running, E-Biking, Adaptive Biking, Winter Fat Biking, Snowshoeing, Nordic Skiing, Horseback and Backcountry Skiing. Popular destinations include Lunderåsen.
This is an auto-generated description of Frogner.
Login or register to submit a custom description.
This region uses the Uk/Euro style trail grading system.
Activities Click to view
- Mountain Bike
39 trails
- E-Bike
24 trails
- Adaptive Bike
17 trails
- Winter Fat Bike
17 trails
- Horse
5 trails
- Hike
39 trails
- Trail Running
39 trails
- ATV/ORV/OHV
0 trails
- Snowshoe
7 trails
- Backcountry Ski
2 trails
- Nordic Ski
7 trails
Region Details
- 21
- 12
- 4
- 2
Region Status
Open as of Aug 3, 2026
Stats
- Avg Trail Rating
- Trails (view details)
- 41
- Trails Mountain Bike
- 39
- Trails E-Bike
- 24
- Trails Gravel Bike
- 23
- Trails Adaptive Bike
- 17
- Trails Winter Fat Bike
- 17
- Trails Horse
- 5
- Trails Hike
- 39
- Trails Trail Running
- 39
- Trails Snowshoe
- 7
- Trails Backcountry Ski
- 2
- Trails Nordic Ski
- 7
- Total Distance
- 22 miles
- Total Descent
- 3,489 ft
- Total Vertical
- 683 ft
- Highest Trailhead
- 1,098 ft
- Reports
- 11
- Photos
- 2
- Completed Counter
- 299
Sub Regions
-
Lunderåsen
- 11
- 4
- 2
Popular Frogner Mountain Biking Trails
• 90 ★ 4.0 • 1 mile • 13 ft • 18 •
From the highest point in Sørum this trail takes you down towards Asak/Leirsund on nice singletrack. Mostly easy but with some technical bits spread throughout the trail. No big jumps or drops, the technical parts are mainly tight...
• 80 ★ 3.0 • 2,612 ft • 6 ft • 16 •
This is the trail you chose if you want to get up to Bjørnholen from Lunderåsen - you have 2 alternative paths, either continue straight ahead after the bridge and up a very steep incline (Svarte Svingende!!) or go the more roundabout...
• 70 ★ 5.0 • 1 mile • 32 ft • 16 •
Fast and flowy trail on mostly easy to follow singletrack down towards Lunderåsen. Does have some roots and rocks, but nothing to scare anyone. Could catch you out in the wet though I suppose..... Starts out with a semi-techie...
• 75 ★ 4.0 • 2,438 ft • 0 ft • 16 •
From the highest top in Sørum down towards Lunderåsen this winding trail leads us down to Frognerhytta. It does have some challenging sections with some muddy areas and lots of roots and rocks, but mostly great fun :) Can be ridden by...
• 80 ★ 4.0 • 928 ft • 23 ft • 15 •
This trail takes you from Frognerhytta to Størsrud where it hits a junction and you get 2 alternative trails down to Lunderåsen (Svarte svingende!!! and Størsrud - Dammyra DH)
• 5 ★ 3.0 • 2,667 ft • 0 ft • 15 •
Short winding singletrack with some nice flowy sections, and some bit more technical parts - but with nothing scary or difficult. Ends up down in an area where it has a tendency to be VERY wet, but we will hopefully sort that out with...
• 5 ★ 4.0 • 1 mile • 32 ft • 8 •
From Størsrud you take the left trail at the junction and get into a nice flowy singletrack that soon starts with a semi technical climb. When you get up on that first top the trail starts dropping off again but you will have to keep...
• 75 ★ 0.0 • 1 mile • 19 ft • 6 •
First you need to climb up to the top and then it's really a go flat out kind of trail, but lots of roots and off camber rocks make it trecherous in the wet. No big jumps, drops or anything scary - apart from being insanely slippery...
Photos of Frogner Mountain Bike
Videos of Frogner Mountain Bike
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| Rotknoten | May 10, 2023 @ 12:11pm May 10, 2023 | Variable | Smartlook | ||
| Trondheimsveien | Apr 3, 2021 @ 6:10am Apr 3, 2021 | Ideal | Smartlook | ||
| Størsrud - Dammyra DH | Nov 2, 2019 @ 3:32am Nov 2, 2019 | Icy | ejo016 | ||
| Bjørnholen til Frognerhytta | Nov 2, 2019 @ 3:32am Nov 2, 2019 | Wet | ejo016 | ||
| Fjellskrenten til Dammyra | Nov 2, 2019 @ 3:32am Nov 2, 2019 | Prevalent Mud | ejo016 | ||
| Bjørnholen DH mot Branderudveien | Sep 16, 2019 @ 8:07am Sep 16, 2019 | Variable | pugtheblack | ||
| Frognerhytta til Størsrud | Sep 16, 2019 @ 8:07am Sep 16, 2019 | Variable | pugtheblack | ||
| Svarte svingende!!! | Sep 12, 2019 @ 8:05am Sep 12, 2019 | Variable | pugtheblack |
Activity Feed
| username | action | type | title | date |
|---|---|---|---|---|
| AnnapGf8WH | ridden | trail | activity #101214783 | Aug 10, 2026 @ 10:37pm Aug 10, 2026 |
| Cykeljohan | update | region | activity #95093589 | May 20, 2026 @ 1:26am May 20, 2026 |
| Cykeljohan | add | trail | activity #95093580 and 2 more | May 20, 2026 @ 1:26am May 20, 2026 |
| BecauseAnimeLogic | wishlist | region | activity #50697709 | Apr 1, 2024 @ 4:31am Apr 1, 2024 |
| Smartlook | add | report | activity #39848857 | May 10, 2023 @ 1:32pm May 10, 2023 |
Local Badges
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Epic Ride Climb 2k5 awarded -
Climbing 10k Badge7 awarded -
Climbing 100k Badge0 awarded -
Epic Ride Descent 2k5 awarded -
Descent 10k Badge8 awarded -
Descent 100k Badge0 awarded
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | activity logs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 39 | 21 miles | 3,465 ft | 10 miles | 682 ft | #9,369 | #77 | 2 | 11 | 2 | 718 | |
| E-Bike | 24 | 14 miles | 2,621 ft | 7 miles | 541 ft | #4,241 | #55 | 11 | 68 | |||
| Gravel Bike | 23 | 11 miles | 889 ft | 3 miles | 617 ft | #4,972 | #27 | 3 | ||||
| Adaptive Bike | 17 | 8 miles | 597 ft | 2 miles | 617 ft | #2,417 | #48 | 1 | ||||
| Winter Fat Bike | 17 | 10 miles | 2,047 ft | 5 miles | 682 ft | #1,518 | #43 | 10 | ||||
| Horse | 5 | 2 miles | 774 ft | 2 miles | 505 ft | #1,275 | #19 | |||||
| Hike | 39 | 21 miles | 3,465 ft | 10 miles | 682 ft | #6,111 | #65 | 11 | 1 | 31 | ||
| Trail Running | 39 | 21 miles | 3,465 ft | 10 miles | 682 ft | #5,567 | #63 | 11 | 47 | |||
| Snowshoe | 7 | 5 miles | 1,427 ft | 4 miles | 525 ft | #239 | #11 | 2 | ||||
| Backcountry Ski | 2 | 2,844 ft | 7 ft | 702 ft | 361 ft | #278 | #13 | 11 | ||||
| Nordic Ski | 7 | 4 miles | 289 ft | 2 miles | 371 ft | #732 | #34 | 366 |
Frequently Asked Questions About Frogner
▼
What are the best places to ride in Frogner?
Frogner has 1 areas to explore for mountain biking. The top rated areas are:
▼
What are the highest rated mountain biking trails in Frogner?
The highest rated mountain biking trails in Frogner are:
- Størsrud - Dammyra DH (4.1/5)
- Bjørnholen DH mot Branderudveien (4/5)
- Frognerhytta til Størsrud (4/5)
- Bjørnholen til Frognerhytta (4/5)
- Svarte svingende!!! (4/5)
▼
What is the best time of the year to ride in Frogner?
Based on activity log data, the most popular months to ride in Frogner are:
- May (5 activities)
- November (1 activities)
- October (1 activities)
▼
Where can I park to ride in Frogner?
There are 2 parking locations listed in Frogner. The most popular parking spots are:
Activities
- By pugtheblack
& contributors - Admins: mtbboy1993, Cykeljohan
- #31197 - 1,385 views
- frogner activity log | embed map of Frogner mountain bike trails | frogner mountain biking points of interest
Downloading of trail gps tracks in kml & gpx formats is enabled for Frogner.
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