Helen Putnam Trails Challenge group hike

Thank you, Trails Challenge Sponsors!

The Trails Challenge is supported by the Sonoma County Regional Parks Foundation with sponsorship from REI Co-Op, Whole Foods Market, Green Valley Consulting Engineers, EBA Engineering, Spring Lake Village, the Pacific Foundation for Medical Care, the Sonoma County Public Library Foundation, Shutterbug Camera Shops and the Sonoma County Water Agency.

Thank you, sponsors, for your generous contributions.

Trails Challenge sponsors

Become a Member

Regional Parks members enjoy free parking, a free night of camping, free admission to the Tolay Fall Festival, and more.

Join now!