Online registration will open on November 4th. Advance registration is required. There will be no race day registration. The race entry will be limited to the following: 50K - 400 // 25K - 100 // 10K -100 // VK - 200.

Before March 1
Before July 1st
After June 30th
Vertical K$40$50$60


Entry fees will be refunded ONLY to athletes with a valid medical reason under the following provisions: Entry fees will be refunded if requested 1 week prior to first day of event onsite registration. Participants must have a valid medical reason and documentation, each case will be reviewed. A 25% service charge will be deducted from all refunds. All refunds are at the sole discretion of Aspen Snowmass. Absolutely no refunds will be given after the above date regardless of reason and no refunds will be given due to event cancellation. Registrations are non-transferable.

Mandatory Racer Check-In

Racer check-in will be on Friday Aug 4 from 4pm to 7pm and on Saturday Aug 5 from 9am to 5pm in Aspen Mountain's Upper Gondola Plaza located at 601 E Dean St. All racers must check in to sign a waiver and pick-up a racer bib. We will also have a gift bag for each racer. If you cannot make it during this time please reach out to Brendan at to make arrangements for day of pickup.

All racers will be required to check in the morning of the race prior to the start. This includes those that picked up their bib the previous day. Staff with check in sheets will be at each start location.

Finish Details

The 50K, 25K and 10K races will finish in Snowmass. The VK will finish at the top of Aspen Mountain.


50K: 1st – $1,000 / 2nd – $500 / 3rd – $250
25K: 1st – $300 / 2nd – $125 / 3rd – $75
VK: 1st – $150 / 2nd – $60 / 3rd – $40

Finishers of the 50K & VK will be awarded US Skyrunner Series points. Any athlete under current competition ban recognized by WADA will not be eligible for prize money or points. Vertical K winners (male and female) will receive FREE entry into the Red Bull 400 on September 30, 2017 at Utah Olympic Park, in Park City Utah. Entry also includes two nights of lodging courtesy of Red Bull. See below for more information on the Red Bull 400.


Parking and Transportation 

Parking is available for free in Aspen on Sunday only. The Snowmass Parking Garage at the finish line also has free parking available. There is limited parking at the Tiehack parking lot (25K start). There is free bus service to the Tiehack parking lot via the Maroon Bells service by getting off at the Aspen Rec Center stop and between Aspen and Snowmass on RFTA.


  • Stay on the designated trails; no short-cutting switchbacks. Those attempting to take short-cuts will be disqualified and publicly shamed.
  • Headphones are permitted, but please be respectful when entering aid stations and crossing other trails. Be aware that the trails are open to the public and, in spots, cross other trails that may include cyclist, runners, hikers, etc. Please rock-out responsibly.
  • There is a cut-off at noon at the Tiehack Aid Station.
  • If you choose to drop-out, please alert the nearest aid station personnel. We do not want to worry your emergency contact person!
  • No dogs are allowed
  • No littering! We have trash cans and recycle bins at each aid station. Just because it's a race doesn't mean you get to forget your manners.
  • If you must relieve yourself, please use a bathroom (available at the top of Aspen Mountain, Tiehack, Elk Camp Restaurant) or discretion.
  • All runners must carry a water bottle.

Other Information 

Racer Bags:
Each racer will be allowed to deposit one bag at the start that will be shuttled to the Tiehack aid station or finish line. In an effort to reduce waste we will not provide a bag, please bring your own. Make sure your name and bib number are clearly written on the outside of the bag.

Course Marking: The course will be marked with red/white striped tape and directional signage with the event logo.

Aid Stations:The Clif Power Stations will have water, Clif Bars, Clif Shot Gel, Clif Bloks, Clif Electrolyte Mix, Red Bull, Coca Cola, candy and other snacks to keep you fueled. Aid stations will be place at the following locations:

– Top of Aspen Mountain (2.58 miles from start)
– Intersection of Midnight Mine and Castle Creek Road (7.86 miles from start)
– Aspen Highlands Ski Patrol Headquarters (11.3 miles from start)
– Tiehack Parking Lot (17 miles from start)
- West Buttermilk Gate (Water Only)
– Elk Camp Restaurant (24.8 miles from start)
** There will be other locations along the course with limited resources available (water). You should plan to be able to make it from aid station to station without additional support.

Cut-Off Times: To ensure racer safety we will have a cut-off at the Tiehack Parking lot. The cut-offs will beat noon at Tiehack parking lot and 4PM at the Elk Camp Restaurant.

Normal Mountain Operations: We ask each racer to keep in mind that Snowmass and Aspen Mountain will be open to guests as usual starting at 10am. Also Government Trail is open to the general public on race day so please be respectful of the general public on the trails and aware of other users.

Racer Safety: For the safety of every racer, each athlete is required to notify the closest course marshal of any injury or racer who appears to have ventured off-course ASAP. We will have plenty of medical staff available to assist along the course.

Racer Family Lift Tickets: We will be offering 50% off vouchers for family members of racers who wish to watch/cheer from the top of Elk Camp Gondola in Snowmass. Vouchers will be available at registration.

After Party & Award Ceremony: After finishing the race we’d like to invite all racers to join us at the after party for a well deserved beer at the Sundeck on Saturday and a meal and a beer at Venga Venga on Sunday. Awards will be at 1:30pm in Aspen's Upper Gondola Plaza on Saturday for the VK and at 2:30pm on Fanny Hill on Sunday for the 50K, 25K and 10K. Friends and family are invited but food and beverage will only be provided to racers.
* Must be 21+ to consume alcohol, other beverages will be available for purchase.