14 miles
1,296 ft
-5,969 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.

Local Trail Association
Salmon Idaho Mountain Bike Association (www.ridesalmon.com)
Please consider joining or donating to the local riding association to support trail development & maintenance.
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Route POI


  • 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
    -4,673 ft
  • Altitude min
    4,153 ft
  • Altitude start
    8,826 ft
  • Altitude end
    4,153 ft
  • Grade max
  • Grade min
  • Distance climb
    5 miles
  • Distance down
    9 miles
  • Distance flat
    2,172 ft
no votes yet
Layers winter
Trail Style
  • ?
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Trail transparency

Recent Trail Reports Along Route

Henry Creek
Dec 11, 2017 @ 5:42pm
Dec 11, 2017
Good boot pack trail up to the gate below the wall. Stream crossings are slick if frozen. Large tree blocking trail above intersection w/ BLM 313 reporter
Henry Creek (Lower)
Dec 11, 2017 @ 2:17pm
Dec 11, 2017
Good boot pack trail. Stream crossings are slick if frozen. reporter
Ridge Road (020)
Jan 27, 2016 @ 9:15am
Jan 27, 2016
The Ridge Road is groomed for snowmobiles. Don't expect virgin corduroy, but it is usually firm enough to ride. Ridge Road south from Wms Summit sometimes is rough from the FAA maintenance cat that visits Lake Mtn.
Thunder Mountain
Jun 30, 2015 @ 6:01pm
Jun 30, 2015
Cleared down trees, branches, and rocks on June 30,2015 from Deegan Mountain Road down to 028 road. About two miles. .
Lake Creek Road (028)
May 30, 2015 @ 6:43am
May 30, 2015
more reports »
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