more stats
1.2 miles
Distance
252 ft
Climb
-3 ft
Descent
00:12:59
Avg time
251 ft
Altitude change
5,506 ft
Altitude min
5,757 ft
Altitude max
5,506 ft
Altitude start
5,758 ft
Altitude end
3.9%
Grade
-2.2%
Grade max
20.6%
Grade min
4,944 ft
Distance climb
230 ft
Distance down
1,234 ft
Distance flat
00:12:59
Avg time

3N09.1 Details

  • Activities
    • Mountain Bike
    • E-Bike
    • Gravel Bike
    • Adaptive Bike
    • Horse
    • Hike
    • Trail Running
  • Riding Area
    Crystal Lake
    Glendora, California
  • Ref Number
    3N09.1
  • Difficulty Rating
    Access Trail or Doubletrack Rate
  • Local Popularity
    70 in Mountain Biking [+]
    • 100 in E-Biking
    • 5 in Trail Running
    • 5 in Hiking
    • 5 in Horseback
  • Hiking SAC Scale
    T1 Hiking
  • Trail Type
    Asphalt/Tarmac Road
  • Bike Type
    AM, XC, RD, Adaptive MTB, CX, Gravel
  • Direction
    Both Directions
    Popular Direction Shown
  • Physical Rating
    Moderate
  • Trail Visibility
    Always easy to follow
  • Dogs Allowed
    Yes

3N09.1 is the 'secondary loop' road in the Crystal Lake basin, accessing the old picnic area adjacent the lake, and the lower trailhead for the Islip Ridge Trail. There is parking at the start for 10-12 cars along the main Crystal Lake Road (3N09). The road is closed to motor vehicles, but sees occasional Ranger and LEO traffic.

Note that the various loop roads comprising the campground are also designated 3N09.1, but have a letter suffix (3N09.1A, B, C...H). These CG loops are clearly signed as 'Loop A' etc.

Traditionally Indigenous Territory

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  • Last: Mar 26, 2026
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        Directions to 3n09-1 trailhead (34.320910, -117.842850)

        Photos

        1 more »
        67 |
        Jul 7, 2022 @ 5:00pm
        Jul 7, 2022

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        Crystal Lake

        • By thomasjkenney1024TF Pro & contributors
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        Frequently Asked Questions About 3N09.1

        ▼ Where is 3N09.1 located?
        3N09.1 is located in Crystal Lake, Glendora, California, United States. It is part of the Crystal Lake trail network. The trailhead is located at coordinates 34.32091, -117.84285.
        ▼ What is the elevation gain for 3N09.1?
        3N09.1 has 252 ft of elevation gain. The trail has 3 ft of elevation descent. The elevation ranges from 5,506 ft to 5,757 ft.
        ▼ Is 3N09.1 a point to point trail?
        3N09.1 is not a point to point trail. The direction is Both Directions. The trail type is asphalt/tarmac road.
        ▼ How long is 3N09.1?
        3N09.1 is 1.2 miles long. The trail type is asphalt/tarmac road.

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