more stats
525 ft
Distance
123 ft
Climb
00:00:45
Avg time
123 ft
Altitude change
1,822 ft
Altitude min
1,945 ft
Altitude max
1,822 ft
Altitude start
1,946 ft
Altitude end
23.5%
Grade
11.7%
Grade max
50.8%
Grade min
525 ft
Distance climb
00:00:45
Avg time

UpperDown Details

  • Activities
    • Mountain Bike
    • E-Bike
    • Gravel Bike
    • Winter Fat Bike
    • Horse
    • Hike
    • Trail Running
    • Dirtbike/Moto
    • ATV/ORV/OHV
  • Riding Area
    Marr Ranch Open Space
    Simi Valley, California
  • Difficulty Rating
    Blue Rate
  • Local Popularity
    80 in Mountain Biking [+]
    • 95 in E-Biking
    • 95 in Trail Running
    • 70 in Hiking
    • 5 in Dirtbiking
    • 5 in ATVing/Offroading
    • 5 in Horseback
  • Global Ranking
    #24368 in Mountain Biking [+]
    • #37350 in E-Biking
    • #45303 in Trail Running
    • #87012 in Hiking
    • #5236 in Dirtbiking
    • #1582 in ATVing/Offroading
    • #16806 in Horseback
  • Trail Type
    Singletrack
  • Bike Type
    AM, XC, Fat, CX, Gravel
  • Direction
    Both Directions
    Popular In Reverse
  • Climb Difficulty
    Blue
  • Physical Rating
    Moderate
  • Trail Visibility
    Sometimes hard to follow
  • Dogs Allowed
    Yes
  • eBike Allowed
    Yes

Just a steep shortcut you can take up or down.

Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 12 rides
  • 15 miles avg distance
All
  • 152 rides
  • Last: Aug 5, 2026
c1c2c3c4
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Status:
on Jul 21, 2025
Dry
Avg: 3.7 (1 votes)
Your vote: 0

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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.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
  • bi-directional trail
  • no data
Trail Last Ridden
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  • < 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.
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  • popular
  • less popular
  • not popular
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Activity Recordings
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Personal Heatmap
▶ Activity Types
all / none
▶ Options
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Date range month
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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
Flat N NE E SE S SW W NW
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        Directions to upperdown trailhead (34.318120, -118.676900)

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        Nearby Trails

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        Frequently Asked Questions About UpperDown

        ▼ Where is UpperDown located?
        UpperDown is located in Marr Ranch Open Space, Simi Valley, California, United States. It is part of the Marr Ranch Open Space trail network. The trailhead is located at coordinates 34.31812, -118.6769.
        ▼ How hard is UpperDown?
        UpperDown is rated as Blue difficulty. The physical rating is Moderate. The average grade is 23.5%. The climb difficulty is rated Blue.
        ▼ What is the elevation gain for UpperDown?
        UpperDown has 123 ft of elevation gain. The elevation ranges from 1,822 ft to 1,945 ft.
        ▼ Is UpperDown a point to point trail?
        UpperDown is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
        ▼ How long is UpperDown?
        UpperDown is 525 ft long. The trail type is singletrack.
        ▼ Are dogs allowed on UpperDown?
        Yes, dogs are allowed on UpperDown. Please keep dogs on a leash where required and clean up after them.
        ▼ When is the best time of year to ride UpperDown?
        Based on activity log data, the most popular months to ride UpperDown are:
        • January (6 activities)
        • March (3 activities)
        • June (3 activities)
        Check the reports page for current trail conditions.
        ▼ How do I access UpperDown? Where is the closest parking trailhead?
        The closest parking and trailhead locations to UpperDown are: View all parking locations in the area.
        ▼ How long does it take to ride UpperDown?
        The estimated time to ride UpperDown is approximately 1 minute. The trail is 525 ft long. Actual times will vary based on fitness level, conditions, and pace.
        ▼ How busy is UpperDown?
        UpperDown is a very popular trail. There have been 854 recorded activities on this trail. The trail has received 1,205 check-ins. View recent activity on this trail.

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