Become a Member

If you are registering for a class and would like to take advantage of your membership discount immediately, you must log in here, register for all classes first and then join or renew your membership at the end of the registration process. Otherwise your membership will be activated in two-business days and the membership discount will not be reflected.
ACES membership provides special opportunities to enjoy ACES while also making a meaningful investment in the future of our planet.


• Invitations to ACES’ events and programs throughout the year
• Discounts on ACES’ classes and camps
• Priority registration and $10 discount on tickets for ACES’ Farm to Table events
• Discounted tickets to ACES’ Annual Harvest Party
• Free admission to ACES’ winter lecture series
• Invitations to annual membership dinners
• Monthly email newsletter
• 10% discount on purchases at ACES Shops
• Mailed copy of ACES Annual Report & State of the Forest Report
• Reciprocal benefits at over 100 nature centers across the U.S.
Red-tail Hawk Membership Benefits +
• Recognition in ACES Annual Report
• Opportunity to host private events at Hallam Lake or Rock Bottom Ranch
Cutthroat Trout Membership Benefits +
• Advance opportunity to purchase our limited-number holiday hams
Bighorn Sheep Membership Benefits +
• Complimentary Aspen or Snowmass Mountain Snowshoe Tour for two
ACES BIRD CLUB | $250 (special program membership for birders, more info here)
Includes a $50 Red-tailed Hawk Membership and benefits +
• Unlimited morning and evening birding for a year
• Additional discounts for all-day birding excursions
• Invitations to special birding events
• 10% Discount on binoculars, scopes, and other birding gear at The Fat Robin


Donor Circle contributions have an extraordinary impact. Members enjoy special invitations to meet with pioneering environmental leaders and scientists and are provided premium access to ACES programs and events.
STEWARD | $1,200
All general membership benefits +
• One complimentary gift membership to share with a friend
• Special invitations to cocktail receptions and dinners
• 20% discount on ACES Shop purchases
• Invitations to ACES Edventure events
• Recognition at ACES visitor centers
ADVOCATE | $2,500
Steward Donor Circle Benefits +
• Special access and reserved parking at ACES Annual Harvest Party
• Personal tour of ACES sites with CEO (by appointment)
INNOVATOR | $5,000
Advocate Donor Circle Benefits +
• Private tour of your choice with ACES’ Director of Naturalist Program for up to five guests
• Special sustainable holiday gift
BENEFACTOR | $10,000
Innovator Donor Circle Benefits +
• Ashcroft tour for two with lunch at Pine Creek Cookhouse with ACES CEO
Benefactor Donor Circle Benefits +
• Reserved seating at all ACES events
Restorer’s Circle Benefits +
• Additional benefits and naming opportunities
based on the donor’s areas of interest


For more information or to discuss ACES membership, please contact Ali Hager at or 970.925.5756. 

Aspen Center for Environmental Studies is a 501(c)(3) nonprofit organization. All gifts are tax-deductible to the extent allowed by law.