The Sonoma County Trails Challenge is an invitation to discover your Regional Parks.

Hike, run, bike, or ride at least five trails featured in the Trails Challenge guidebook anytime from June through September and get a free Trails Challenge t-shirt! The guidebook presents trail notes for fifteen featured parks, turn-by-turn trail directions, maps, and suggestions for themed hikes — including an all-park challenge of more than 50 miles.

Share your trail photos on social media with hashtags #SonomaCountyParks and #TrailsChallenge, and you'll be eligible for giveaways of park memberships and REI trail gear.

The 2019 guidebook is available for free download.

Happy Hiking!