Guided walks, group hikes, and volunteer trail days.
Aspen Center for Environmental Studies (ACES)
Daily, mid-June through early September (Maroon Bells, Snowmass, Aspen Mountain)
Maroon Bells Visitor Center, Snowmass Mall, and Aspen Mountain (Richmond Ridge)
Free naturalist-guided walks daily in summer — Maroon Lake walks, Snowmass wildflower and Ice Age hikes, and Aspen Mountain walks. Times vary by location; see the ACES schedule.
Free guided hikes scheduled July through October
Trailheads across the Roaring Fork Valley and surrounding public lands
Free, guide-led hikes into the wild lands the nonprofit works to protect, with conservation context along the way. Registration required; dates posted each summer.
Roaring Fork Outdoor Volunteers
Volunteer projects April through October, weekdays and weekends
Trailheads valley-wide (many transit-accessible)
Hands-on trail and restoration work, from easy to strenuous, with no experience needed. Includes evening trail-work sessions. Register on the RFOV calendar.