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Trails Challenge

Hikers on the East Ridge Trail at Tolay Lake Regional Park

The Sonoma County Trails Challenge is an invitation to discover your Regional Parks by hiking, running, biking or riding the trails featured in the Trails Challenge guidebook. 

Download the guidebook and use it as a year-round resource for hiking itineraries and trail information at more than 15 featured parks. The guidebook includes park notes, trail descriptions, turn-by-turn directions, maps, and themed hikes. 

We invite you to use the Trails Challenge guidebook to explore the parks on your own, with family, friends or co-workers or with your pet. Suggested trails range from easy to strenuous and are located throughout Sonoma County - from Petaluma to Gualala and Sonoma Valley to Bodega Bay!



The Trails Challenge is supported by the Sonoma County 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.