14.4 miles
Distance
2,771 ft
Climb
-3,447 ft
Descent
1 mile
High Point
-678 ft
Altitude change
6,053 ft
Altitude min
6,781 ft
Altitude start
6,102 ft
Altitude end
-0.9%
Grade
-58.4%
Grade max
51.2%
Grade min
5 miles
Distance climb
8 miles
Distance down
2 miles
Distance flat

The full Decoster trail (#012) from South to North. This trail starts at Dry Ridge Rd and ends at the North Jackpine-Pinochle Loop Rd, crossing Rammel Mountain Rd and many of the decommissioned logging roads and around one dozen creeks and drainages of the Northern Tetons.

source: https://www.tetonmtb.com
Detailed Description
Decoster is a 14 mile popular expert route located near Tetonia Idaho. This mountain bike only route can be used both directions and has a hard overall physical rating. This route includes 1 trails. This route climbs 2,771 ft with a max elevation of 7,093 ft then descends -3,447 ft.
Local Trail Association
Local trail association
Teton Mountain Bike Alliance (www.instagram.com)
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Stats

  • Distance
    14 miles
  • Altitude change
    -678 ft
  • Altitude min
    6,053 ft
  • Altitude start
    6,781 ft
  • Altitude end
    6,102 ft
  • Climb
    2,771 ft
  • Descent
    -3,447 ft
  • Grade
    -0.9%
  • Grade max
    -58.4%
  • Grade min
    51.2%
  • Distance climb
    5 miles
  • Distance down
    8 miles
  • Distance flat
    2 miles

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Trails in Route

Details

  • Riding area
    Northern Tetons
  • Primary Activity
    Mountain Bike
  • Difficulty rating
    Black Diamond
  • Route Type
    Point to Point
  • eBike Allowed
    No
  • Bike type
    AM, XC
  • Direction
    Both Directions
  • Physical rating
    Hard
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    Recent Trail Reports Along Route

    statustraildateconditiondescription
    Decoster Trail
    Sep 21, 2025 @ 10:22am (America/Boise)
    Sep 21, 2025
    		Time for an update on the Wyoming Pathways work with help from the Montana Conservation Corps and TMBA on the section between Dry Ridge Rd. and Rammel Mtn. Rd. It’s good and now much better than the old description. You’ll still hike a bike some but, the overall ride is now much better. More updates as we complete this work before snow piles up.
    more reports »
    • By danaramosTF Pro TMBA & contributors
    • #62122 - 294 views

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