One of the main features of the Lost Forest, Treeline Trial Challenge Course combines rappels, ziplines, bridges and ladders for a thrilling obstacle course in the trees. Learn to trust your instincts, conquer your fears, and surprise yourself.

Open to families and thrill-seekers, the course has already redefined the on-mountain experience at Snowmass. Choose from five different courses of varying difficulty: Lily Pads (easiest), Snakes & Ladders, Eagle Walk, Spider Web and Islands in the Sky (most difficult). View the video below for a comprehensive look at these features.

Still image of Snowmass Lost Forest Treeline Trial Challenge Course
Still image of Snowmass Lost Forest Treeline Trial Challenge Course

planning information

Allow a minimum of 2 hours to experience the Challenge Course including orientation. The Challenge Course is space-permitting and available on a first-come-first-serve basis beginning at 10am. We recommend arriving early. The last Challenge Course orientation begins at approximately 1pm and the last opportunity to begin a course is 3:30pm.

Guests should arrive at the Elk Camp Gondola Ticket Office to begin the check-in process. Guests will then continue to the top of the Gondola to the Lost Forest Headquarters, present their ticket, get fitted with gear and begin the orientation process.

Rules & Health Requirements

  • All guests must sign a release of liability waiver
  • All loose clothing and hair below shoulder length shall be secured
  • No food or gum is allowed


Guests who are under the influence of drugs or alcohol of any kind may not participate in this activity. Guests with the following medical conditions may not participate in this activity: (a) pregnant or think they may be pregnant, (b) heart condition, (c) seizure condition, (d) history of back or neck injury, or (e) any other medical condition that prevents guest from following the safety rules and guidelines.

Age, Height & Weight Restrictions

Age: 14+ years old or accompanied by an adult
Height: Between 48-78 inches / 122-198cm
Weight: Between 70–250 lbs / 32-113 kg

What to Bring

  • Only closed-toed shoes and boots are allowed on the Treeline Trial Challenge Course. No sandals or flip-flops.
  • Wear longer shorts, pants or leggings (for more comfort with the harness)
  • Short-sleeved and long-sleeved shirts are also more comfortable than tanktops due to the harness.
  • Bring sunscreen, sunglasses and a water bottle with a carabiner.
  • Take off all necklaces and large jewelry before arriving at Snowmass
  • If you bring your phone, store it in a securely zipped pocket
  • Leave backpacks and extra items in the Lost Forest Headquarters
  • Use the restroom before you go – There are restrooms in the Lost Forest Headquarters.