Tolay Lake Regional Park offers nearly 12 miles of trails originating from the park center accessed from Cannon Lane. Hikers, mountain bikers, and equestrians may combine several trails to form looped routes or longer out-and-back excursions.
With the park's daily opening in late 2018, visitors gained access to the southern 1,600-acre section of the park via a 2-mile extension of the West Ridge Trail. The hike provides an 8-mile round-trip excursion to the far reaches of Tolay Creek with views of the Tolay Valley, Petaluma River Valley, and San Pablo Bay.
Another popular destination is the Three Bridges Vista Point. This 5-mile hike follows Causeway Trail across Tolay Lake and climbs through oak woodland to join the East Ridge Trail. Views take in the Richmond-San Rafael Bridge, Bay Bridge, and Highway 37 overpass.
Other hiking options include shorter trips along Tolay Creek and several ponds.
Most trails cross open grasslands and offer limited shade, so bring plenty of water and sun protection.
Leashed dogs are welcome on trails. Visitors may encounter livestock grazing along trails.