Snowshoe & Ski Tours

Travel along mountain streams, over ridgelines, and through beautiful valleys in the Aspen area while learning about mountain ecology on ACES' naturalist guided snowshoe tours. Each winter, daily snowshoe tours are offered on top of Aspen Mountain, Snowmass Mountain, and at the Ashcroft Ghost Town. Check back in October for complete information.

Fire in the Belly: Stories of Change

The Community Office for Resource Efficiency (CORE), in partnership with Aspen Center for Environmental Studies, the City of Aspen and Writ Large, is thrilled to present a live story evening featuring Roaring Fork Valley locals on stage telling first-person stories curated by Alya Howe. The event, which will include solar seed house tours, a “Fire in the Belly” engagement station, drinks from Marble Distilling Co. and Aspen Brewing Company, and vittles from Slow Groovin’ BBQ, will take place on June 6th at Rock Bottom Ranch.

Fire in the Belly is a car-free, zero-waste event!
Please walk, bike or take our free shuttle from Basalt.
We’ll be posting details on the shuttle schedule here soon.

The theme of the night is “Fire in the Belly: Stories of Change.” Turning a corner, rallying together, playing a part, creating something new. Finding solutions in the face of shifting sands: an uncertain future, a changing environment, weird weather. Whatever keeps you rolling up your sleeves and moving forward with hope.

Led by Writ Large curator/director Alya Howe, Fire in the Belly is a new event that is part of a long tradition of live story events in the Roaring Fork Valley presented by Writ Large. The series has been touching the hearts of all involved: tellers and listeners. As Alya says, “We believe everyone has a story, many in fact! The sharing of a true tale enables you to see where you now stand within the story, even what the story has to tell you.” Stories, an ancient form of communication, are a powerful way to connect us to each other and to connect the dots between our actions and the environment. 

With this program, we aim to help residents of the Roaring Fork Valley see that they are powerful change agents, able to create impact in their own communities. We will tie this theme into our collective work to protect natural resources, save energy and cut carbon emissions. 


Fire in the Belly" is sponsored by:





Rock Bottom Ranch

Community Pedaleando

Now in its second year, the Community Pedaleando is a celebration of cycling, health, and sustainability in the Roaring Fork Valley hosted by Aspen Valley Ski & Snowboard Club, Aspen Center for Environmental Studies, Aspen Community Foundation, and Valley Settlement. 

Celebrate the start of summer with us in North Face Park! Complete fun activities to earn a free lunch, ride in a family-friendly bike ride, enjoy music from DJ Scratch, or learn to ride a bike! Learn about opportunities for your family to be active this summer, including AVSC's bike program and ACES' summer camps! All are welcome to join.

If you don’t have a bike, we will have some for you to try out! Bikes will be available to borrow for ages 7+.

We need volunteers! Sign up for a job here:

Free Members
Free Non Members

10:30AM - 2PM
North Face Park, Carbondale

Owl Afternoon with ACES

In celebration of ACES Children's Education Fund, bring your family to Aspen Sports in Aspen and meet ACES' resident Great Horned Owl. At this event, you will learn all about these incredible predators and participate in owl-themed crafts!

We're grateful to partner with Aspen Sports again this year on our annual Children's Education Fund (CEF) drive: the central fundraising effort for ACES' environmental education programs.

During the month of March, make a donation to support environmental science education at any Aspen Sports location, and Aspen Sports will match 50% of your gift up to $100!

Free Members
Free Non Members

3PM - 5PM
Aspen Sports in Aspen

Family Energy Extravaganza

In celebration of ACES Children's Education Fund, visit Aspen Sports in Snowmass and experiment with an energy bike generator to make a snack! We’ll also have hands-on educational activities for the whole family.

We're grateful to partner with Aspen Sports again this year on our annual Children's Education Fund (CEF) drive: the central fundraising effort for ACES' environmental education programs.

During the month of March, make a donation to support environmental science education at any Aspen Sports location, and Aspen Sports will match 50% of your gift up to $100!

Free Members
Free Non Members

3PM - 5PM
Aspen Sports in Snowmass

Earth Day Celebration

Join ACES, the City of Aspen, Pitkin County Landfill, and Aspen Hatter to celebrate Earth Day and ring in the start of the 2018 summer season! Head down to Hallam Lake to meet community members interested in environmental issues, explore the nature preserve, and enjoy locally-sourced snacks from Rock Bottom Ranch, and cocktails from Marble Distilling Company. Guests are invited to try out our bike-powered blender station, where they can use kinetic energy to make a tasty treat! 

COMMUNITY CLEAN-UP: Meet at Outdoor Voices in Aspen at 3:30PM to collect microtrash around town before arriving at ACES at 5PM. Participants will receive a free pair of leggings or shorts from Outdoor Voices at the Earth Day Celebration! 

Participating organizations include:

Aspen Brewing Company | Aspen High School Earth Club
Aspen Historical Society | Aspen Strong | Aspen T.R.E.E.
Citizens’ Climate Lobby | CORE | Evergreen ZeroWaste
Holy Cross Energy | Marble Distilling Company | Outdoor Voices

Presented in partnership with:

Free Members
Free Non Members

5PM - 7PM
Hallam Lake

Snow Moon Dinner

This event is sold out! 

ACES Donor Circle members are invited to experience the moonlit magic of the Castle Creek Valley by joining us for dinner at the Catto Center at Toklat. This special evening will feature a locally-sourced five-course meal prepared by Jason Smith, renowned chef and Director of ACES at Rock Bottom Ranch. Following dinner, join us for a walk under the moonlit sky, dessert, & drinks by the fire. 

This event is reserved for ACES' Donor Circle members. Donor Circles Members enjoy special invitations to meet with pioneering environmental leaders and scientists, and are provided premium access to ACES programs and events. Make an impact with a gift to ACES of $1,200 or more and join a community of environmental leaders who believe in improving the planet through environmental science.

To become a Donor Circles member, click here

Please bring a warm coat, good snow boots, hat, and mittens for the outdoor portion of the evening. Complimentary transportation for guests will pick up and drop off from the Aspen Chapel parking lot near the Roundabout. Shuttles will depart at 6PM & return by 9:30PM.

For more information about Donor Circle Events and other special invitations, please contact Ali Hager at 

$189 Members

6:30PM - 9:30PM
The Catto Center at Toklat

Transcending Wild Tasmania

This summer, Digital Producer Danny Brown set out to embark on a one month trip with the goal of shooting a feature-length film for a company called Direct Experiences about meditation in and around Tasmania. Along with a small crew, Danny and his wife captured IMAX-resolution video, time lapse, and aerial cinematography of beautiful locations around the island. Through filming healing sights and sounds, Danny hopes to bring audiences to a place of peace and serenity and to help others release tension, stress, anxiety, and embrace the joy of their true selves.

Flying over 400 lbs. of camera gear all over Tasmania, 
Danny and his crew were able to capture truly inspiring cinematic footage. Danny's film includes epic scenes of the natural world, as well as mind-melting works of stone balance art created by Michael Garb. Join Danny as he shares the story of this amazing journey, accompanied by behind the scenes content, descriptions of the technical wizardry behind the camera gear he uses, and previews of the final films from this trip. 

Learn more about Danny's work by visiting him on Instagram

Tea, donated by Two Leaves and a Bud Tea Company, beer, donated by Aspen Brewing Company, and cookies will be offered during lecture.



Wild & Scenic Film Festival 2018

Tickets on sale now! Click here to purchase. 

ACES and Patagonia Snowmass are thrilled to once again host the internationally acclaimed Wild & Scenic Film Festival on Thursday, March 15th at 7PM at the Wheeler Opera House!

This special evening will showcase short films that both inform and inspire attendees to take action. This all-ages event will include a cash bar, gear giveaways, and more.

Proceeds from the event will benefit ACES' Tomorrow's Voices program, which provides civics and environmental leadership education to regional high school students. The mission of Tomorrow's Voices is to cultivate responsible citizenship and ethical leadership in the youth of the Roaring Fork Valley. 

ACES thanks the following sponsors for their support of this year's Wild & Scenic Film Festival:  






The Wheeler Opera House, 320 East Hyman Avenue, Aspen, CO

Seeking Balance & Finding Adventure Through Skiing in Kyrgyzstan

More than a year ago, Marian Krogh decided that she wanted to go on a real ski adventure to somewhere far away and little-explored. In addition, she hoped to combine her passion for raising environmental awareness with her love of skiing.

After several months of research, Marian and two other female skiers from New Zealand chose Kyrgyzstan as their destination, specifically the At-Bashi range in the southeast: an area littered with unclimbed or skied peaks. In addition to being a very undeveloped area, more than 50% of the population in this region live below the poverty line as nomadic subsistence farmers. Climate change has drastically affected this area and this traditional way of living. 

In January, Marian and her team traveled to Kyrgyzstan to attempt a challenging 8-day ski traverse of the At-Bashi range and to explore the surrounding villages. As part of their journey, Marian and her fellow skiers investigated the effects of climate change on these remote mountain communities. Join us as we listen to Marian share this incredible adventure with her home mountain community upon her return!

“The world’s poor, though least responsible for climate change, are most vulnerable and already suffering its impact.” - Pope Francis

Learn more about Marian's work by visiting "Seeking Balance, Finding Adventure" on Facebook and Instagram

Tea, donated by Two Leaves and a Bud Tea Company, beer, donated by Aspen Brewing Company, and cookies will be offered during lecture.


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