14.2 miles
735 ft
-5,395 ft
2 miles
High Point

These trails are primitive. Navigation is difficult. Be prepared with a GPS track or bring a Guide.

Big Idaho Shuttle dropping over 6000' on Thunder Mountain and Henry Creek Trails from the top of Lake Mountain to the Salmon River.

This is Idaho backcountry riding at its finest.

This ride takes 1.5-3 hours without the shuttle setup. There is a climb on Forest Road from Thunder Mountain to Henry Creek (Upper) and Upper Henry itself has some climbing before the bottom drops out.

Start the ride on the Ridge Road near the top of Lake Mountain, not because it is convenient but because you are antsy to get out of the car and onto your bike. At least an hour is needed to get to the Dropoff. Pick up is at Henry Creek Trailhead.

Detailed Description
Thunder Mtn to Henry Creek is a 14 mile less popular extreme route located near Salmon Idaho. This mountain bike only route can be used one direction and has a moderate overall physical rating. This route includes 6 trails. This route climbs 735 ft with a max elevation of 8,986 ft then descends -5,395 ft.
Local Trail Association
Local trail association
Salmon Idaho Mountain Bike Association (salmonidahomtb.org)
Please consider joining or donating to the local riding association to support trail development & maintenance.
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2 Reviews & Comments

  • + 1
chuktA TRAILFORKS (Nov 13, 2014 at 17:13)
Thanks sidehiller, I will make a Trail Report
  • + 1
sidehiller1 TRAILFORKS (Nov 12, 2014 at 18:31)
Cleaned the branches across the trail to above the wall and put a new gate stick in the gate in the fence just below the wall. The lower part of the trail is in excellent shape. We'll see what the winter brings.

Route POI


  • Riding area
  • Primary Activity
    Mountain Bike
  • AKA
    Thunder Hank
  • Difficulty rating
    Double Black Diamond
  • Route Type
  • Bike type
  • Direction
    One Direction
  • Physical rating
More Stats for Thunder Mtn to Henry Creek mountain bike route
  • Altitude change
    -4,660 ft
  • Altitude min
    4,167 ft
  • Altitude start
    8,827 ft
  • Altitude end
    4,167 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    4 miles
  • Distance down
    9 miles
  • Distance flat
    2,228 ft
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Trail Conditions
  • Unknown
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Recent Trail Reports Along Route

Henry Creek
Nov 25, 2021 @ 7:09pm
Nov 25, 2021
Cleared brush, rocks and sticks from this section of trail.
Henry Creek (Upper)
Jul 31, 2021 @ 4:38pm
Jul 31, 2021
All clear with exception of a handful of large diameter trees - still riding good, if you can find the way.
Henry Creek (Lower)
Jul 31, 2021 @ 4:35pm
Jul 31, 2021
Someone just put a blade on first mile or so…not sure why.
Thunder Mountain
Jul 13, 2020 @ 5:57pm
Jul 13, 2020
Upper mile or so has been cleared through first sagebrush meadow. Numerous trees down across trail below that. Need chainsaw.
Lake Creek Road
May 12, 2019 @ 7:19am
May 12, 2019
Road is clear to the last half mile. Drifts are disappearing quickly. A little post-holing never hurt ya...
more reports »
  • By chuktA TRAILFORKS NFTA Map Team & contributors
  • #132 - 1,206 views
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