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5.0 miles
Distance
1,148 ft
Climb
-1,153 ft
Descent
2,383 ft
High Point
-5 ft
Altitude change
1,301 ft
Altitude min
1,306 ft
Altitude start
1,302 ft
Altitude end
-42.8%
Grade max
47%
Grade min
2 miles
Distance climb
2 miles
Distance down
820 ft
Distance flat
How to get up to, and then down El Prieto
Detailed Description
El Prieto Loop is a 5 mile popular intermediate route located near Altadena California. This mountain bike primary route. This route includes 4 trails. This route climbs 1,148 ft with a max elevation of 2,383 ft then descends -1,153 ft.
Trail Issues on Route
- Minor Issue / Yellow: 3 trails (newest: Sep 24, 2026)
Local Trail Association
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Stats
-
Distance5 miles
-
Avg time1 hr 20 min
-
Altitude change-5 ft
-
Altitude min1,301 ft
-
Altitude start1,306 ft
-
Altitude end1,302 ft
-
Climb1,148 ft
-
Descent-1,153 ft
-
Grade max-42.8%
-
Grade min47%
-
Distance climb2 miles
-
Distance down2 miles
-
Distance flat820 ft
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Trails in Route
| 3 miles | |||||
| 4,629 ft | |||||
| 2 miles |
Details
-
Riding area
-
Primary ActivityMountain Bike
-
Other Activities
- Hike
- Trail Running
-
Difficulty ratingBlue
-
Activity Logs
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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)
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
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- Both Directions
- Uphill Primary
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- One Direction
Contribute Details
Colors indicate trail is missing specified detail.
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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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Activity Recordings
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Activity Recordings
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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
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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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Photos
Videos
mtb
Jump Fail
trail: El Prieto Trail
0:20 | 47 | comments: 0 | favs: 1
Sep 26, 2025
Tried doing a jump and ended terrible
youtuber
![El Prieto Trail / Altadena, CA / MTB]()
mtb
El Prieto Trail / Altadena, CA / MTB
trail: El Prieto Trail
6:05 | 675 | comments: 0 | favs:
Sep 28, 2023
Recent Trail Reports Along Route
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- By Geckoblue545 & contributors
- #27402 - 2,517 views
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