Part of the broader San Diego River Coalition and led by the San Diego River Park Foundation, the Western 9 Trail Alliance brings together community members, organizations, public agencies, and regional partners to help complete and enhance the westernmost nine miles of the San Diego River Trail and Regional Bikeway, from Snapdragon Stadium/SDSU Mission Valley to Ocean Beach.

The Alliance focuses on closing critical trail gaps, improving connections to neighborhoods and transit, and advancing projects through collaboration, advocacy, and funding support. By sharing expertise, coordinating efforts, and building community momentum, we're working toward a safer, more accessible, and connected river trail for everyone, while protecting and celebrating the natural beauty, wildlife, and ecological health of the San Diego River.