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988 ft
Distance
3 ft
Climb
-38 ft
Descent
00:00:34
Avg time
-34 ft
Altitude change
110 ft
Altitude min
149 ft
Altitude max
149 ft
Altitude start
115 ft
Altitude end
-3.4%
Grade
-13.8%
Grade max
1.7%
Grade min
341 ft
Distance climb
545 ft
Distance down
102 ft
Distance flat
00:00:34
Avg time
Tunnel E4/E20 Details
-
Activities
- Mountain Bike
- Gravel Bike
- Adaptive Bike
- Winter Fat Bike
- Hike
- Trail Running
-
Riding AreaRönninge
Salem -
Difficulty Rating
-
Local Popularity100 in Mountain Biking heatmap [+]
- 5 in Trail Running
- 100 in Hiking
- 5 in Winter Fat Biking
- 5 in Adaptive Biking
- 95 in Gravel Biking
-
Trail TypeDirt/Gravel Road
-
Bike TypeAM, XC, RD, Fat, Adaptive MTB, CX, Gravel
-
DirectionBoth Directions
-
Climb DifficultyGreen
-
Physical RatingEasy
-
Dogs AllowedYes
Gravel road under the freeway E4/E20. Connecting the Tullarn Area and The Salem/Rönninge area.
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 10 rides
- 35.3 km avg distance
All
- 146 rides
- Last: Oct 19, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Tunnel E4/E20 Trail Reports
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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)
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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 Used
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
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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.
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- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
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US Cell Coverage
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Radar Time
Activity Recordings
Trailforks uses anonymized public activity data.
?
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
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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
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Only show trails with no bike usage.
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Directions to tunnel-e4-e20 trailhead
(59.205640, 17.703010)
Photos
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