2019 Registration

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Advance registration is required. There will be no race day registration. The race entry will be limited to the following: 50K - 100 // 25K - 100 // 10K -50

Before May 1st
Before July 1st
After July 1st


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 July 12th from 4pm to 7pm 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 bcollins@aspensnowmass.com 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.


50K: 1st – $1,000 / 2nd – $500 / 3rd – $250
25K: 1st – $300 / 2nd – $125 / 3rd – $75
10K: 1st – $150 / 2nd – $60 / 3rd – $40

Finishers of the 50K 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.


Parking and Transportation 

Paid parking is available near the 50K start in Aspen on the streets or the Rio Grande Garage. The Snowmass Garage at the finish line has free parking available. Free parking is also available at the Brush Creek Lot. We have arranged for an early RFTA bus to leave the Brush Creek lot at 5am heading to Rubey Park in Aspen. The first normally scheduled bus leaves Brush Creek at 5:30am and arrives in Aspen's Rubey Park at 5:48am. If you are staying in Snowmass and plan to bus this will be your best option to get to the 50K start since the Snowmass busses to the Brush Creek lot do not start running until 6am. There is limited parking at the Tiehack parking lot (25K start). There is free bus service to the Tiehack parking lot via the Castle/Maroon bus by getting off at the Aspen Rec Center stop and between Aspen and Snowmass on RFTA. Busses run continuously between the start and finish. Please check the RFTA schedule for the best information.


  • 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 aid stations will have water, electrolyte mix, Red Bull, Coca Cola, pretzels, potato chips, 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
– 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 meal and a beer at the finish. Awards will be at 2:30pm in Base Village 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.