39 miles
2,044 ft
-453 ft
1 miles
High Point
Trail Supporters, Builders & Maintainers of Yellowstone Branch Trail


  • Riding area
    Island Park
    Island Park, Idaho
  • Difficulty rating
  • Trail type
    Rail Trail
  • Bike type
    XC, Fat, CX
  • Trail Usage
  • Direction
    Both Directions
  • Climb Difficulty
  • Physical rating
  • Global Ranking

The Railroad Right-of-Way Trail winds through the pristine wilderness of Idaho's Targhee National Forest. The sprawling forest is a unit of the even larger Caribou-Targhee National Forest, which borders famous Yellowstone and Grand Teton National Parks.

Built on a former railroad corridor that once provided tourist access from Idaho Falls, Idaho, to West Yellowstone, Montana, the trail parallels Warm River for a few miles from its south trailhead at Warm Springs Campground. About 3 miles north of the campground, a short tunnel—original to the railroad—leads through a steep piece of terrain. Unfortunately, the tunnel suffered a cave-in in 2008, so access is prohibited. The trail has been rerouted just to the east, providing closer views of the Warm River.

source: TrailLink
Local Trail Association
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More Stats for Yellowstone Branch Trail mountain bike trail
  • Altitude change
    1,591 ft
  • Altitude min
    5,312 ft
  • Altitude start
    5,312 ft
  • Altitude end
    6,903 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    27 miles
  • Distance down
    10 miles
  • Distance flat
    1 miles
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Layers winter
Trail Style
  • ?
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Directions to yellowstone-branch-trail trailhead (44.120736, -111.310250)
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