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, Green Valley Consulting Engineers, Sonoma Water, EBA Engineering, Spring Lake Village, the Pacific Foundation for Medical Care and Shutterbug Camera Shops.

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!