Dirt Magic 2024 Events Calendar

Join Us for Fun in the Mountains!

Come help us make Dirt Magic in the Lost Sierra! We have a season full of fun on tap this year—mark your calendars to join us at any (or all!) of our events. Registration is currently open for both Lost and Found Gravel Race and Downieville Classic including a whole host of volunteer opportunities at both. You can also sign up for our first volunteer epic weekend of the year, May 3rd – 5th. We hope to see you out there!

Connected Communities

We are planning trails to connect towns in the Lost Sierra, check out this epic plan!

A Trail For Everyone

Watch Our Beautiful Short Film “A Trail for Everyone”

We’re thrilled to launch a short film about Connected Communities, the proposed “Lost Sierra Route” and the positive impact of linking 15 California mountain communities through trails.

Latest News

24 Jan

Comments Needed for 2024 Downieville and Quincy Trailwork

Sierra Buttes Trail Stewardship (SBTS) has applied for a project grant this year and needs your comments to CA-OHV on both so we can receive the grant and...
17 Jan

The 2023 SBTS Trails Report: 20 Years, 200 Miles of Trail Built and More Progress On the Way!

In 2023, SBTS staffed three Pro Trail crews—one based in Downieville, one in Quincy and one in Portola/Greagle—employing 24 crew members, as well as a...
16 Jan

$5 a Foot Has Ended, Thank You to Everyone Who Contributed to Trails!

We have a winner! Congratulations to Aubree Watkins, who takes home the grand prize in our 2023 Twist The Throttle for Trails moto fundraiser—a KTM Freeride...
8 Nov

The Downieville Classic RETURNS July 11-14, 2024 for its 26th Year

Sierra Buttes Trail Stewardship’s marquee race returns for its 26th year next summer, furthering the organization’s mission to build sustainable,...

Upcoming Events

May 3 - May 5 / 7am - 2pm Quincy, CA

Quincy Mountain Epic – May 3 – May 5, 2024

Jun 15 / 6:30 AM - 3:00 PM Portola, CA - The Lost Sierra

Lost and Found Gravel Grinder: June 15, 2024

Jul 11 - Jul 14 / early - late! Downieville, CA

Downieville Classic Mountain Bike Race – July 11 – 14, 2024

Aug 16 - Aug 18 / 7am - 2pm Downieville, CA

Downieville Mountain Epic – August 16-18, 2024

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What We've Accomplished


Miles of New Trail Built


Miles of Trail Maintained


Trail Volunteers Hours


Employees in 2022

3 Ways to Get Involved

Join the family, do good work and have a load of fun, our members provide a crucial backbone to our organization.

Join The Family

Become a Friend of the Trail Stewardship with a donation to our trail projects.

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Sponsor A Trail

The Adopt-A-Trail Program provides a way for businesses and individuals to take a leadership role in trail maintenance.

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Partner with Us

Our partners are essential stakeholders and directly responsible for our non-profit’s success.

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Become a volunteer

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Volunteer at a Trail Daze or one of our races. Contact us if you would like to volunteer other skills or services.

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We promise not to spam you, we just want to pass on the building trails stoke and enjoying the Lost Sierra.