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1,621 ft
Distance
-300 ft
Descent
00:03:21
Avg time
-300 ft
Altitude change
5,078 ft
Altitude min
5,378 ft
Altitude max
5,378 ft
Altitude start
5,079 ft
Altitude end
-18.5%
Grade
-46.6%
Grade max
-3.9%
Grade min
1,621 ft
Distance down
00:03:21
Avg time
Bunker Upper Details
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Activities
- Mountain Bike
- E-Bike
- Hike
- Trail Running
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Riding AreaLa Jarosa
Guadarrama -
Difficulty Rating
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Voted DifficultyBlack (1 vote)
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Local Popularity
-
Global Ranking
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National Ranking
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Hiking SAC ScaleT1 Hiking
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Trail TypeSingletrack
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Bike TypeDH, AM
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DirectionDownhill PrimaryPopular Direction Shown
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Trail VisibilityAlways easy to follow
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eBike AllowedYes up to Class 1
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TTFs on TrailBerm, Drop, Rock Face
Sendero con algunas secciones muy empinadas, tramos de flow, losas de roca y peraltes naturales.
Access Info
A través del Collado de La Gasca
Disclaimer
Sendero con mucha pendiente. Necesitas buenas condiciones físicas y técnicas para hacerlo con seguridad y sin estropear el trazado.
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 31 rides
- 16 miles avg distance
All
- 179 rides
- Last: Nov 8, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Bunker Upper Trail Reports
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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.
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
- 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
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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
Trails are shown in grey.
Only show trails with no bike usage.
Suggested Layers
Based on selected activity type
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Directions to bunker-upper trailhead
(40.695410, -4.143710)
Photos
No photos have been added for Bunker Upper yet, add a photo.
Iogrea
Cuidado en el primer paso de la piedra, algun hdp se dedica a quitar las piedras de la recepción y el viernes 10 por la tarde me di un ostión muy malo
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Nearby Trails
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- La Gasca 1,145 ft
- By pablo-glo
& contributors - #289972 - 1,172 views
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