Who We Are
Launched in October 2023, Mount Diablo Trails Alliance strives to serve as a long-term, trusted partner of California State Parks and related stakeholders at Mount Diablo State Park, helping bridge gaps between conservation objectives, recreation goals and resource constraints.

Our trails stewardship-based initiatives focus on Better Trails (e.g., more accessible, durable and sustainable) & Greater Access (e.g., circulation, connector and loop options for off-road cyclists) for more state park visitors.

Our Mission
Build a sustainable Shared Stewardship model helping California State Parks achieve the three main trail-related goals of the 2016 Road and Trail Management Plan (RTMP) for Mount Diablo State Park:

  1. Operate a regular trail maintenance program, adhering to the standards and techniques prescribed in the California Department of Parks and Recreation (DPR) Trails Handbook.

  2. Improve relative trail access ratios across the main user groups by expanding circulation, connector and loop options for off-road cyclists through change-in-use (CIU) opportunities.

  3. Evaluate non-system trails for removal or adoption to reduce impact on ecological and cultural resources.

To power the Shared Stewardship model, we recruit and educate volunteers to participate in trail maintenance projects called Dig Days, which have evolved to become an integral component to achieving the 2016 RTMP’s trail-related goals.

California State Parks staff plan, approve and manage the Dig Day projects and related operations, while also providing essential tools and equipment.

Through the Shared Stewardship model, volunteers from all ages and backgrounds work together and learn from one another to help support and advance the 2016 RTMP-based policy goals and the broader California State Parks mission:

Protect the environment and biodiversity while providing high-quality outdoor recreational opportunities for park visitors.

Shared Stewardship

Help Us Build on the Early Momentum


Thanks to the dedication and efforts of our amazing volunteers, the Shared Stewardship model is facilitating the implementation of the 2016 RTMP for Mount Diablo State Park.

Since the October 2023 inception of the Shared Stewardship model, over 900 Dig Day volunteers have maintained 11 miles of trails, making them more sustainable and accessible while also helping protect native plants, wildlife, and watershed resources.

  • The long-term goal is to service all 52.5 miles of singletrack trails at Mount Diablo State Park on a 7-to-8-year cycle.

We believe the long-term achievement of the 2016 RTMP’s trail goals can establish Mount Diablo State Park as a beacon for balancing conservation and recreation interests.

Select the link to learn more about the RTMP: 2016 RTMP Hyperlink