The Bay Nature events calendar features events sponsored by Bay Area nature organizations from Sonoma to Santa Cruz. Find guided hikes, learn about Bay Area wildlife, enjoy nature festivals, and more!

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September 2019
Saturday, September 21 @ 9:00 am - 11:00 am

The Impact of Fire

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Sunday, September 22 @ 8:30 am - 1:30 pm

Umunhum Vistas

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Sunday, September 22 @ 10:00 am - 12:30 pm

Ohlone Footsteps

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Sunday, September 29 @ 8:30 am - 11:30 am

Hiking for Health & Hilarity

Shiloh Ranch Regional Park, 5750 Faught Road, Windsor, CA 95403 + Google Map
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Sunday, September 29 @ 9:00 am - 12:00 pm

Twin Ponds Loop Hike – Shell Ridge

Twin Ponds, End of Rockspring Place, Walnut Creek, CA + Google Map
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October 2019
Saturday, October 12 @ 1:30 pm - 5:00 pm

Ferns & Other Ancient Plants

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Sunday, October 13 @ 9:00 am - 12:30 pm

Tennessee Valley and Beach Hike

Tennessee Valley, 591 Tennessee Valley Rd, Mill Valley, CA 94941 + Google Map
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Saturday, October 19 @ 9:00 am - 12:30 pm

Literature, Lore, and Life Sciences

Rancho San Antonio Open Space Preserve, 22500 Cristo Rey Drive, Los Altos, CA 94024 + Google Map
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Saturday, October 19 @ 9:30 am - 2:00 pm

Wildcat Canyon Wonder

Wildcat Canyon Regional Park, 5755 McBryde Ave, Richmond, CA 94805 + Google Map
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Saturday, October 26 @ 9:00 am - 11:00 am

Black Diamond Mines Halloween Hike

Black Diamond Mines, 5175 Somersville Road, Antioch, CA 94509 + Google Map
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Saturday, October 26 @ 10:00 am - 2:00 pm

Ohlone Medicine

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November 2019
Saturday, November 2 @ 10:00 am - 1:00 pm

The Wallace Stegner Special

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December 2019
Saturday, December 7 @ 9:00 am - 12:00 pm

Chaparral Spring – Conservation Story Hike

Chaparral Spring, 9575 Marsh Creek Road, Clayton, CA 94517 + Google Map
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Sunday, December 15 @ 9:00 am - 11:00 am

Native Flora & Fauna Hike – Briones Regional Park

Bear Creek Staging Area, 1611 Bear Creek Road, Lafayette, CA + Google Map
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Saturday, December 21 @ 4:30 pm - 7:30 pm

Solstice Night Hike

Helen Putnam Regional Park, 411 Chileno Valley Road, Petaluma, CA 94952 + Google Map
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Ongoing Events


Sonoma Mountain Camp and Trek


Come celebrate beautiful Sonoma Mountain on this park-to-park adventure! Enjoy a supported one-way hike across the Bay Area Ridge Trail connecting the North Sonoma Mountain Regional Park and Open Space Preserve in Santa Rosa to Jack London State Historic Park in Glen Ellen. Many organizations have been key in a long-term conservation effort that so f...

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Sonoma Mountain Camp & Trek Begins


North Sonoma Mountain Regional Park and Open Space Preserve Enjoy a supported one-way 9-mile hike across the Bay Area Ridge Trail connecting North Sonoma Mountain Regional Park to Jack London State Historic Park in Glen Ellen. Participants can opt to hike or camp as well. Saturday, Sept. 28, camping includes a catered dinner, ranger night hike, and more. Sunday, Sept....

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