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Latest News

7 May

25th Annual Downieville Classic Canceled

With great sadness the Sierra Buttes Trail Stewardship announces the cancelation of the 25th Annual Downieville Classic. Although the decision to cancel was...
30 Apr

Santa Cruz Bicycles Manufactures and Donates PPE for Lost Sierra First Responders

(Downieville, CA) April 30, 2020 - The Sierra Buttes Trail Stewardship, in partnership with Yuba Expeditions bike shop and The Lure Resort in Downieville today...
16 Apr

SBTS Partner and Volunteers of the Year for 2019

WTB is the 2019 SBTS Partner of the Year! Wilderness Trail Bikes (WTB) has been a part of the Lost Sierra trail scene since the early 90’s when their staff...
10 Apr

Yamaha Awards grant of $26,822 to Sierra Buttes Trail Stewardship

Donation to provide a fully equipped trail tools wagon as part of the ongoing effort to encourage safe, responsible and sustainable open riding areas in Plumas...


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Trail Volunteers Hours



Upcoming Events

Apr 18 / 8AM - 3PM Quincy, CA

Quincy Trail Daze – April 18, 2020

Due to Coronavirus concerns and following Plumas County Health recommendations, this event has been canceled. Project Overview Volunteer workday project...
May 15 - May 17 / 7am - 2pm Quincy, CA

Annual Mountain Epic – May 15-17, 2020

Due to Coronavirus concerns and following Plumas County Health recommendations, this event has been canceled. We will continue to monitor the situation...
Jun 6 / 6:30 AM - 3:00 PM Portola, CA - The Lost Sierra

Lost and Found Gravel Grinder: June 6, 2020

Lost & Found has been canceled, see our statement on the cancelation. 30 mile, 60 mile and 100 mile epicly beautiful bike ride. A perfect blend of...
Jun 20 / 8:30am - 5pm Downieville, CA

Downieville Trail Daze – June 20, 2020

Project Overview: Take Dad out for Father's Day Weekend to do volunteer trail work on Downieville trails with the SBTS Pro Crew! It's better than a neck...
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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.

3 Ways to Get Involved

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

Ride with Us

Since 1991, Yuba Expeditions has been shuttling riders on adventures in Downieville.

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Attend an Event

Attend our next Trail Daze, Mountain Epic, the Downieville Classic, Grinduro or Lost and Found.

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Join Our Tribe

Join today as a Core or Annual Member to support trails and access our exclusive membership perks.

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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.