more stats
2,277 ft
Distance
60 ft
Climb
-268 ft
Descent
00:03:27
Avg time
-208 ft
Altitude change
484 ft
Altitude min
692 ft
Altitude max
691 ft
Altitude start
484 ft
Altitude end
-9.131%
Grade
-40.354%
Grade max
15.805%
Grade min
499 ft
Distance climb
1,653 ft
Distance down
125 ft
Distance flat
00:03:27
Avg time

Oh No Details

  • Activities
    • Mountain Bike
    • Hike
    • Trail Running
  • Riding Area
    Jackson Demonstration State Forest
    Mendocino, California
  • Difficulty Rating
    Blue Rate
  • Local Popularity
    95 in Mountain Biking [+]
    • 95 in Trail Running
    • 80 in Hiking
  • Global Ranking
    #43505 in Mountain Biking [+]
    • #29635 in Trail Running
    • #85290 in Hiking
  • Trail Type
    Singletrack
  • Bike Type
    AM, XC
  • Direction
    Downhill Primary
    Popular Direction Shown
  • Dogs Allowed
    Yes
  • Land Owner
    Jackson Demonstration State Forest

No community description for Oh No trail has been added yet!

AI Generated Description

Oh No is a highly rated 2,277 ft popular blue difficulty singletrack trail located near Mendocino California. This mountain bike primary trail can be used downhill primary. On average it takes 3 minutes to complete this trail.

Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 2 rides
  • 16 miles average
6 Months
  • 60 rides
  • 15 miles avg distance
All
  • 499 rides
  • Last: Aug 8, 2026
c1c2c3c4
January
February
March
April
May
June
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August
September
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Status:
on Apr 19, 2026
Ideal
Avg: 4.24 (10 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
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.
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  • popular
  • less popular
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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

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.

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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 oh-no trailhead (39.313461, -123.720828)

        Photos

        No photos have been added for Oh No yet, add a photo.

        Videos

        2 more »
        Endo-Oh No! Trail - Jackson Demonstration...
        mtb
        5:29 | 181 | Oct 25, 2024 , Mendocino
        Endo O-No Fury III Boiler Trail Guide
        mtb
        12:11 | 543 | Sep 19, 2020 , Mendocino

        Routes with this trail

        89
        Mendo Primo
        ★ 5.0 • 19 miles • 3,127 ft • 13 • Loop •
        This route includes most of our favorite trails in this area and almost completely avoids fire roads. It's...
        37
        Shuttle - Manley Gulch, Marsh Creek, Boiler, Oh No, Endo
        ★ 3.0 • 7 miles • 914 ft • 4 • Shuttled •
        This route skips the ride up to save emtb/onewheel battery for the rest of the route. Ends near heartwood...
        58
        BIG Mendo Loop 30
        30 miles • 4,281 ft • 7 •
        marsh, , ohno, , , , down easy out, , TV, , , , , little lake down manly.

        2 Reviews & Comments


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        Nearby Trails

        Jackson Demonstration State Forest

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        Frequently Asked Questions About Oh No

        ▼ Where is Oh No located?
        Oh No is located in Jackson Demonstration State Forest, Mendocino, California, United States. It is part of the Jackson Demonstration State Forest trail network. The trailhead is located at coordinates 39.31346, -123.72083.
        ▼ How hard is Oh No?
        Oh No is rated as Blue difficulty. The average grade is 9.131%.
        ▼ What is the elevation gain for Oh No?
        Oh No has 60 ft of elevation gain. The trail has 268 ft of elevation descent. The elevation ranges from 484 ft to 692 ft.
        ▼ Is Oh No a point to point trail?
        Oh No is not a point to point trail. The direction is Downhill Primary. The trail type is singletrack.
        ▼ How long is Oh No?
        Oh No is 2,277 ft long. The trail type is singletrack.
        ▼ Are dogs allowed on Oh No?
        Yes, dogs are allowed on Oh No. Please keep dogs on a leash where required and clean up after them.
        ▼ When is the best time of year to ride Oh No?
        Based on activity log data, the most popular months to ride Oh No are:
        • August (36 activities)
        • June (33 activities)
        • July (30 activities)
        Check the reports page for current trail conditions.
        ▼ How do I access Oh No? Where is the closest parking trailhead?
        The closest parking and trailhead locations to Oh No are: View all parking locations in the area.
        ▼ How long does it take to ride Oh No?
        Based on recorded activities, it takes an average of 3 minutes to ride Oh No. The trail is 2,277 ft long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
        ▼ How busy is Oh No?
        Oh No is a very popular trail. There have been 2,547 recorded activities on this trail. The trail has received 2,615 check-ins. View recent activity on this trail.

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