A roughly three-hour morning walk for birders of all levels, led by veteran naturalist Rebecca Weiss. Discounted for ACES members. Runs select Tuesdays — confirm the date and location before going.
Most Wednesdays through the summer (weather permitting), alternating road and mountain bike events
Varies — venues from Aspen to Glenwood Springs
Beginner-friendlyCost variesSummer
The 2026 season runs 15 April to 26 August, alternating road and mountain bike rounds, nearly all on Wednesdays with the occasional weekend one-off. The club marks dates tentative until permits issue.
A relaxed 4–5 mile route around Carbondale with drinks and snacks afterward. All paces welcome, from first-timers to veterans; bring a headlamp in the darker months.
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More recurring & seasonal
Groups whose schedule rotates or is seasonal — check the source for the next date.
Seasonal volunteer trail-work days through spring–fall
Trailheads valley-wide (New Castle to Aspen)
Beginner-friendlyNo-dropFreeSummer
Build and maintain the valley’s 300+ miles of singletrack alongside fellow riders. Dates are posted through the season — check the RFMBA site and Facebook.
Drop-in bouldering on a Walltopia wall plus MoonBoard and Kilter training boards; the valley’s indoor-climbing gathering spot. Confirm current hours before you go.
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.
Trailheads across the Roaring Fork Valley and surrounding public lands
Beginner-friendlyNo-dropFreeSummer
Free, guide-led hikes into the wild lands the nonprofit works to protect, with conservation context along the way. Registration required; hikes and other outings are posted on the events calendar each summer.
Volunteer projects April through October, weekdays and weekends
Trailheads valley-wide (many transit-accessible)
Beginner-friendlyNo-dropFreeSummer
Hands-on trail and restoration work, from easy to strenuous, with no experience needed. Includes evening trail-work sessions. Register on the RFOV calendar.
An introduction to fly fishing on one of Colorado’s premier Gold Medal trout rivers, run as part of the Conservancy’s watershed-education programming. Check the site for upcoming sessions.
Paddling⚠ Needs verification
Roaring Fork Kayaking Club Clinics & Pool Sessions
Seasonal pool clinics and river clinics; events posted through the year
Valley pools and Roaring Fork / Colorado river runs
Beginner-friendlyNo-dropCost variesShoulder season
Whitewater pool and river clinics, swiftwater-rescue courses, and community paddles for all skill levels. Join the newsletter to catch registrations when they open.