Welcome to the Adventure Center of the Lost Sierra

Adventure Tours

We are currently booking 2026 Adventure Tours before our other shuttle options open for the season.

Start Your Adventure

Trail Conditions

Hero dirt is what we all want.

Check in weekly for trail conditions updates, closures, and what is new to ride.

Trail Conditions and Information

Sierra Buttes Trail Stewardship’s Adventure Center is the pioneer of backcountry mountain biking in the Lost Sierra. We are avid mountain bikers, passionate about riding, hiking, exploring, building and maintaining the trails in this beautiful area.

Yuba Expeditions is an extension of the Sierra Buttes Trail Stewardship (SBTS) 501c3 non-profit dedicated to the maintenance and enhancement of trail systems.

Learn more about how all proceeds from our Adventure Center go back into building more trails.

Learn more about SBTS