These programs and events will be held at Mark West Regional Park and Open Space Preserve.
April 4, 2026 | 10:00 am - 3:00 pm | Mark West Creek Regional Park and Preserve
Explore one of Sonoma County's newest parklands before it opens to the public.
May 9, 2026 | 9:30 am - 12:30 pm | Mark West Creek Regional Park and Preserve
Break a sweat on this moderate hike with a naturalist exploring plants, animals, and landscapes.
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