East Hidden Valley - Mountain Biking near Rexburg, Idaho - Free Arenas
East Hidden Valley - Mountain Biking near Rexburg, Idaho
Rexburg,Idaho
43.81885, -111.76066
1.6 miles E of Rexburg, Idaho
GPS: 43°49'7.9"N 111°45'38.4"W
Maps | Directions
State: Idaho
Trails/Routes: 0.4-1.3 mi

Hike and Mountain Bike

The East Side of Hidden Valley is the undeveloped half of the trail area on the edge of Rexburg, just east of the signed Hidden Valley Trails network. What was once dirt roads and a dirt bike playground is still mostly that over here: one rocky road up and one tight, janky singletrack back down.

The East Side is undeveloped and does not have parking. It is often marked No Trespassing. Mostly, if you don't know, don't go.

  • Hidden Valley Singletrack is a tight trail with tight corners and sagebrush closing it in even more. It's pretty rocky and has a couple small drops/rock-rolls. Janky describes it well. There are a few gap jumps that you'll need to find some speed for. There are a couple of off-shoots that will drop you right back down to the road to hit some of the bigger jumps below. There's an off-shoot at the end of the trail that you've got to take if you don't want to end up in the field but it's pretty clear where that is when you get to it.
  • Dr. Jekyll is the road you climb up and as a climb, is pretty technical in places with some pretty tricky line choices through rocky sections. The ride down faces similar challenges through the rocky sections, except with gravity on your side. Visibility is much better on the road than in the sagebrush and there's considerably more flow and even some small rollers to jump.

PLEASE NOTE: This is private property that the owners are kind enough to permit use right now. Please respect their surrounding fields and stay on the trails that are already there. Please respect the residents near the trailhead and don't block driveways.

Updated September 11, 2026

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Never modify trail features. Ride trails when they're dry enough that you won't leave ruts. Speak up when you see others on the trail and always yield to hikers, horses, and others coming uphill. Always ride on the established trail.

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Be courteous, informed, and prepared. Read trailhead guidelines, stay on the trail, and don't feed the wildlife.

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  1. Plan Ahead and Prepare
  2. Travel & camp on durable surfaces
  3. Dispose of waste properly
  4. Leave what you find
  5. Minimize campfire impacts
  6. Respect wildlife
  7. Be considerate of other visitors

Directions

From Rexburg, Idaho

  1. Head south on S 3rd W toward W 2nd S (456 ft)
  2. Turn left onto W 2nd S (1.2 mi)
  3. Slight right onto S Millhollow Rd (0.5 mi)
  4. Turn left (0.6 mi)
or

There is no established trailhead or parking on the East Side. The old entries from 7th South and Hidden Valley Road are closed off and posted No Trespassing. If you ride here, stay on the trails that already exist and respect posted signs, residents, and land. Disrespect is a recipe for closure.


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