Treeline Trial Challenge Course

Treeline Trial Lost Forest, Snowmass Village - Colorado

Lost Forest Open: Daily June 21 - September 6, 2021 | Weekends September 10, 2021 - October 3, 2021

10:30AM - 4PM

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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.

Planning Information

Allow a minimum of 2 hours to experience the Challenge Course including orientation. Participation in the Challenge Course requires completion of an orientation session which run every 30 minutes at :00 and :30 past the hour, starting at 10:30 am and ending at 2:00 pm. Guests must select the date and time for their orientation at the time of purchase. There is a maximum of 8 participants per orientation session. Guests should plan to arrive at Snowmass Base Village to check-in outside the Gondola Ticket Office and board the gondola at least 30 minutes prior to their orientation start time. The last opportunity to begin a course is 4:00pm.

Returning guests also need to select the date and time to begin their session at time of purchase, but only need to go through orientation once per summer.

Please review our Lost Forest Rules & Regulations before purchasing admission.

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: 12+ years old or accompanied by an adult
Height: Between 48-78 inches / 122-198cm and able to reach to at least 66"
Weight: Between 50–250 lbs / 22-113 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.
Cancellation Policy
Completely unused Lost Forest Base tickets are refundable. Lost Forest Canopy, Treeline, and Bonus Night Base Tickets require 48-hour cancellation notice. No refunds due to weather if operations remain open. No partial refunds.

Weather Policy
Summer weather in the Rocky Mountains is unpredictable and out of our control. As a result, we do not offer refunds due to weather impacts on our operation. Please check the forecast while planning your activities.

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