more stats
5.1 miles
Distance
3,213 ft
Climb
-1,956 ft
Descent
02:23:34
Avg time
1,258 ft
Altitude change
2,612 ft
Altitude min
4,425 ft
Altitude max
3,167 ft
Altitude start
4,425 ft
Altitude end
4.696%
Grade
-102.335%
Grade max
83.333%
Grade min
3 miles
Distance climb
2 miles
Distance down
508 ft
Distance flat
02:23:34
Avg time

Idlehour Details

  • Activities
    • Mountain Bike
    • Hike
    • Trail Running
  • Riding Area
    Angeles National Forest
    Pasadena, California
  • Difficulty Rating
    Black Diamond Rate
  • Local Popularity
    5 in Mountain Biking [+]
    • 5 in Trail Running
    • 5 in Hiking
  • Global Ranking
    #149864 in Mountain Biking [+]
    • #326521 in Trail Running
    • #331167 in Hiking
  • State Ranking
    #5,587 in Mountain Biking · California [+]
    • #13,349 in Trail Running
    • #14,186 in Hiking
  • Trail Type
    Singletrack
  • Bike Type
    AM, XC
  • Direction
    Both Directions
    Popular In Reverse
  • Season
    All Year
  • Dogs Allowed
    Yes
  • TTFs on Trail
    Rock Garden

The trailhead is located at the junction where Mt Lowe Road, Middle Sam Merrill Trail, and the trail to Inspiration Point meet. From this intersection, Idlehour Trail goes east and down. This is some nice singletrack and an alternative to the other trails around. There is a nice climb out from Idlehour Campground, and the trail can get thin and overgrown but it is rideable. Use the Mt. Wilson Toll Road, through Henninger Flats, to exit onto Pinecrest Drive in Altadena.
This trail can also be ridden in the opposite direction.
Trail is 4.5 miles

Access Info

There are trail markers posted at both ends of the trail

Tags
Rock gardens

Trail Supporters

Local Trail Association

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 0 rides
  •  
All
  • 13 rides
  • Last: Jan 1, 2025
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Idlehour Trail Reports

statusdatedescription
Mar 25, 2025 @ 4:43pm
Mar 25, 2025
Mar 5, 2024 @ 1:37pm
Mar 5, 2024
Jul 11, 2023 @ 11:29pm
Jul 11, 2023
 Rode Idlehour on June 26. Tread is in great shape. Poison oak has grown in a lot since the last ride in early May. It is getting pretty hard to...
May 6, 2023 @ 6:25am
May 6, 2023
 Recently brushed and repaired, but still slightly overgrown in spots. Tons of wildflowers today, and a fair bit of poison oak. Probably the best...
Apr 1, 2023 @ 11:30pm
Apr 1, 2023
 Several trees are down on trail and some pretty big stream crossings that requires some skill to get across.
more »
Status:
on Mar 25, 2025
Avg: 3.81 (5 votes)
Your vote: 0

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      Directions to idlehour trailhead (34.199480, -118.079990)
      View on Discover Map

      Photos

      11 more »
      mtb
      220 |
      Nov 5, 2022 @ 9:45pm
      Nov 5, 2022
      mtb
      176 |
      Nov 5, 2022 @ 9:45pm
      Nov 5, 2022
      mtb
      199 |
      Nov 5, 2022 @ 9:45pm
      Nov 5, 2022
      mtb
      340 |
      Apr 30, 2018 @ 6:31am
      Apr 30, 2018
      Views 2Fall colours 1

      Videos

      no videos have been added for Idlehour yet, add a video.
      3.6 ★★★★★
      5 Ratings
      5 ★ 20%
      4 ★ 40%
      3 ★ 20%
      2 ★ 20%
      1 ★

      1 Review & Comments


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      Nearby Trails

      Angeles National Forest

      • By beckley6024 & contributors
      • #124899 - 3,358 views

      Frequently Asked Questions

      ▼ Where is Idlehour located?
      Idlehour is located in Angeles National Forest, Pasadena, California, United States. It is part of the Angeles National Forest trail network. The trailhead is located at coordinates 34.19948, -118.07999.
      ▼ How hard is Idlehour?
      Idlehour is rated as Black Diamond difficulty. The average grade is 4.696%.
      ▼ What is the elevation gain for Idlehour?
      Idlehour has 3,213 ft of elevation gain. The trail has 1,956 ft of elevation descent. The elevation ranges from 2,612 ft to 4,425 ft.
      ▼ Is Idlehour a point to point trail?
      Idlehour is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
      ▼ How long is Idlehour?
      Idlehour is 5.1 miles long. The trail type is singletrack.
      ▼ Are dogs allowed on Idlehour?
      Yes, dogs are allowed on Idlehour. Please keep dogs on a leash where required and clean up after them.
      ▼ When is the best time of year to ride Idlehour?
      Based on activity log data, the most popular months to ride Idlehour are:
      • January (1 activities)
      • June (1 activities)
      • August (1 activities)
      Check the reports page for current trail conditions.
      ▼ How do I access Idlehour? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Idlehour are: View all parking locations in the area.
      ▼ How long does it take to ride Idlehour?
      Based on recorded activities, it takes an average of 2 hours 15 minutes to ride Idlehour. The trail is 5.1 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Idlehour?
      Idlehour is a less popular trail with lighter traffic. There have been 110 recorded activities on this trail. The trail has received 106 check-ins. View recent activity on this trail.

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