more stats
2,969 ft
Distance
-188 ft
Descent
00:05:18
Avg time
-189 ft
Altitude change
633 ft
Altitude min
821 ft
Altitude max
821 ft
Altitude start
633 ft
Altitude end
-6.4%
Grade
-20.6%
Grade max
0.6%
Grade min
2,451 ft
Distance down
197 ft
Distance flat
00:05:18
Avg time

Knoll Downhill Details

  • Activities
    • Mountain Bike
    • E-Bike
    • Hike
    • Trail Running
  • Riding Area
    Black Mountain
    San Diego, California
  • AKA
    Doug Hill
  • Difficulty Rating
    Black Diamond Rate
  • Voted Difficulty
    Black Diamond (8 votes)
  • Local Popularity
    85 in Mountain Biking [+]
    • 90 in E-Biking
    • 85 in Trail Running
    • 70 in Hiking
  • Global Ranking
    #58433 in Mountain Biking [+]
    • #35865 in E-Biking
    • #66950 in Trail Running
    • #93387 in Hiking
  • Trail Type
    Singletrack
  • Bike Type
    AM, XC
  • Direction
    Downhill Primary
    Popular Direction Shown
  • Climb Difficulty
    Blue
  • Physical Rating
    Moderate
  • Dogs Allowed
    Yes
  • eBike Allowed
    Yes up to Class 1
  • TTFs on Trail
    Rock Garden

Usually ridden downhill. Moderately knarly. Keep momentum over the rocks.

Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 4 rides
  • 10 miles average
6 Months
  • 88 rides
  • 20 miles avg distance
All
  • 561 rides
  • Last: Jun 25, 2026
c1c2c3c4
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Knoll Downhill Trail Reports

statusdatedescription
May 3, 2025 @ 6:14am
May 3, 2025
Apr 5, 2025 @ 5:54pm
Apr 5, 2025
 Perfect dirt and compliant chunks- hit it now
Feb 16, 2025 @ 10:07pm
Feb 16, 2025
 Rain exposed few more rocks. Great condition overall.
Feb 16, 2024 @ 8:10am
Feb 16, 2024
Dec 9, 2023 @ 7:55am
Dec 9, 2023
more »
Status:
on May 3, 2025
Ideal
Avg: 4.18 (11 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
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The intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
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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 knoll-downhill trailhead (32.988100, -117.135300)

        Photos

        1 more »
        118 |
        Mar 13, 2024 @ 7:47pm
        Mar 13, 2024

        Videos

        5 more »
        Night Riding Knoll Loops and 'Artiflow' -...
        8:24 | 230 | Sep 10, 2023 , San Diego
        It was so hard to give Mountain Bikers FREE...
        21:34 | 245 | Jun 3, 2022 , San Diego
        Knoll Loop & DH | Black Mountain Part 5/6...
        7:33 | 504 | Mar 4, 2022 , San Diego
        Knoll Loop - Black Mountain Ranch - San Diego,...
        3:48 | 876 | Oct 25, 2020 , San Diego

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        5 Reviews & Comments


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        Frequently Asked Questions About Knoll Downhill

        ▼ Where is Knoll Downhill located?
        Knoll Downhill is located in Black Mountain, San Diego, California, United States. It is part of the Black Mountain trail network. The trailhead is located at coordinates 32.9881, -117.1353.
        ▼ How hard is Knoll Downhill?
        Knoll Downhill is rated as Black Diamond difficulty. The physical rating is Moderate. The average grade is 6.4%. The climb difficulty is rated Blue.
        ▼ What is the elevation gain for Knoll Downhill?
        The trail has 188 ft of elevation descent. The elevation ranges from 633 ft to 821 ft.
        ▼ Is Knoll Downhill a point to point trail?
        Knoll Downhill is not a point to point trail. The direction is Downhill Primary. The trail type is singletrack.

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