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1,348 ft
Distance
20 ft
Climb
-252 ft
Descent
00:09:30
Avg time
-238 ft
Altitude change
1,836 ft
Altitude min
2,094 ft
Altitude max
2,074 ft
Altitude start
1,837 ft
Altitude end
-17.6%
Grade
-52.4%
Grade max
28%
Grade min
157 ft
Distance climb
1,037 ft
Distance down
154 ft
Distance flat
00:09:30
Avg time
Dirty Bird Details
-
Activities
- Mountain Bike
- E-Bike
- Hike
- Trail Running
-
Riding AreaRocky Peak Park
Simi Valley, California -
Difficulty Rating
-
Voted DifficultySecondary Access Road/Trail (4 votes)
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Local Popularity
-
Global Ranking
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State Ranking#4,113 in Mountain Biking · California [+]
- #3,230 in E-Biking
- #14,447 in Trail Running
- #7,157 in 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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Dogs AllowedYes
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eBike AllowedYes up to Class 1
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TTFs on TrailBerm, Drop, Jump, Gap Jump, Rock Face, Rock Garden
No community description for Dirty Bird trail has been added yet!
AI Generated Description
Dirty Bird is a 1,348 ft less popular black diamond difficulty singletrack trail located near Simi Valley California. It has rock slabs. This mountain bike primary trail can be used downhill primary. It features berm, drop, jump, gap jump, rock face and rock garden. On average it takes 9 minutes to complete this trail.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 0 rides
All
- 8 rides
- Last: Jan 31, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Dirty Bird 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
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- 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.
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ATV/ORV/OHV Filter
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Activity Recordings
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Activity Recordings
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Winter 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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Slope Aspect
Direction the slope faces
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Directions to dirty-bird trailhead
(34.275070, -118.640050)
Photos
5 more »
Videos
3 more »
mtb
0:11 |
186 |
Feb 23, 2022 , Simi Valley
mtb
4:24 |
414 |
Feb 19, 2018 , Simi Valley
mtb
6:26 |
190 |
Sep 14, 2015 , Simi Valley
Scottyd17485
Not in the best of shape. Getting a bit overgrown before it meets up with skanks. Not really worth doing for now unfortunately.
Lukeschrodi
This should be a double black...It has very technical rock rollers, mandatory gap jumps and drops...
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