more stats
3.3 miles
Distance
-1,964 ft
Descent
2 miles
High Point
-1,964 ft
Altitude change
7,684 ft
Altitude min
9,648 ft
Altitude start
7,684 ft
Altitude end
-11.4%
Grade
-61%
Grade max
3.1%
Grade min
164 ft
Distance climb
3 miles
Distance down
335 ft
Distance flat

Devils Basin Details

  • Activities
    • Mountain Bike
    • E-Bike
    • Horse
    • Hike
    • Trail Running
    • Dirtbike/Moto
  • Riding Area
    Lemhi Mountains
    Leadore, Idaho
  • Ref Number
    #4075
  • Difficulty Rating
  • Voted Difficulty
    Double Black Diamond (1 vote)
  • Local Popularity
    5 in Mountain Biking [+]
    • 5 in E-Biking
    • 5 in Trail Running
    • 5 in Hiking
    • 5 in Dirtbiking
    • 5 in Horseback
  • Global Ranking
    #165093 in Mountain Biking [+]
    • #227085 in E-Biking
    • #359298 in Trail Running
    • #304178 in Hiking
    • #14267 in Dirtbiking
    • #23915 in Horseback
  • State Ranking
    #1,566 in Mountain Biking · Idaho [+]
    • #1,398 in E-Biking
    • #2,779 in Trail Running
    • #2,549 in Hiking
    • #1,933 in Dirtbiking
    • #813 in Horseback
  • Trail Type
    Singletrack
  • Bike Type
    AM, XC
  • Direction
    Downhill Primary
  • Climb Difficulty
    Double Black Diamond
  • Physical Rating
    Extreme
  • Season
    Summer
  • Alpine Trail
    Yes
  • Dogs Allowed
    Yes
  • eBike Allowed
    Yes up to Class 1
  • TTFs on Trail
    Rock Garden
  • Land Owner
    USFS

The Devils' Basin (aka North Fork Big Creek Trail) #4075 is a steep descent in the remote backcountry that is not recommended for uphill travel by bike (trust me, it would be miserable). It traverses through some very serious rock gardens for the top mile of the trail that should be attempted by fully padded nutso's only. The lower part of the trail has several rock gardens and technical creek crossings as well. The trail does not get a lot of use and can be hard to follow in some locations.

It can be used as a good connector from Big Eightmile area to Park Fork / Lake Fork Trail, but beware it's a serious endeavor and needs a strong mental game. Check the current status of the trail as deadfall could make the lower sections a painfully slow experience. The Idaho Trail Rangers moto crew sometimes clears this trail, so check their reports.

Access Info

Start of the trail (top) is a vague intersection with Patterson Trail (#6185) at the saddle.

Tags
AlpineRock gardens
Trail Supporters
Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 0 rides
  •  
All
  • 0 rides
  • Last: Aug 15, 2021
update trails status or condition

Devils Basin Trail Reports

statusdatedescription
Aug 26, 2025 @ 6:37pm
Aug 26, 2025
All clear, but there is significant water on the trail in some lower bits.
Aug 31, 2021 @ 12:24pm
Aug 31, 2021
A couple of trees down but easy to get around.
Jul 26, 2019 @ 11:31am
Jul 26, 2019
reporter Clear of deadfall by IDPR Trail Rangers July 10-15
Dec 9, 2017 @ 12:08pm
Dec 9, 2017
reporter
more »
Status:
on Aug 26, 2025
Variable
Avg: 4.13 (2 votes)
Your vote: 0

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      Directions to devils-basin trailhead (44.557260, -113.583768)

      Photos

      9 more »
      mtb
      49 |
      Aug 26, 2025 @ 6:44pm
      Aug 26, 2025
      mtb
      65 |
      Aug 26, 2025 @ 6:43pm
      Aug 26, 2025
      mtb
      47 |
      Aug 26, 2025 @ 6:43pm
      Aug 26, 2025
      mtb
      32 |
      Aug 26, 2025 @ 6:40pm
      Aug 26, 2025

      Videos

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      5.0 ★★★★★
      2 Ratings
      5 ★ 100%
      4 ★
      3 ★
      2 ★
      1 ★

      2 Reviews & Comments

      oldermountain oldermountain
      More info: this trail is awesome. The first is disheartening, as it is mostly scree crossings, but it eventually tur s to super techy rocly steeps. There are even optional rock rolls/slabs everywhere, as plenty of rock stepdowns. A blast even pn the hardtail.

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      • By FandersonTF Pro & contributors
      • #98558 - 2,237 views

      Frequently Asked Questions

      ▼ Where is Devils Basin located?
      Devils Basin is located in Lemhi Mountains, Leadore, Idaho, United States. It is part of the Lemhi Mountains trail network. The trailhead is located at coordinates 44.55726, -113.58377.
      ▼ How hard is Devils Basin?
      Devils Basin is rated as Double Black Diamond difficulty. The physical rating is Extreme. The average grade is 11.4%. The climb difficulty is rated Double Black Diamond.
      ▼ What is the elevation gain for Devils Basin?
      The trail has 1,964 ft of elevation descent. The elevation ranges from 7,684 ft to 9,648 ft.
      ▼ Is Devils Basin a point to point trail?
      Devils Basin is not a point to point trail. The direction is Downhill Primary. The trail type is singletrack.
      ▼ How long is Devils Basin?
      Devils Basin is 3.3 miles long. The trail type is singletrack.
      ▼ Are dogs allowed on Devils Basin?
      Yes, dogs are allowed on Devils Basin. Please keep dogs on a leash where required and clean up after them.
      ▼ When is the best time of year to ride Devils Basin?
      Devils Basin is best visited during: Summer.
      ▼ How busy is Devils Basin?
      Devils Basin is a less popular trail with lighter traffic. There have been 6 recorded activities on this trail. The trail has received 6 check-ins. View recent activity on this trail.

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