Bay Day Challenge

San Francisco Bay Trail

Join the Bay Day Challenge from September 8 to October 7, presented by Save The Bay, in partnership with San Francisco Bay Trail. This free, region-wide event lets you create the experience that’s right for you with 30 days of … Read more

Free

In Search of Galls at Jack London State Historic Park

Jack London State Historic Park 2400 London Ranch Rd, Glen Ellen, CA, United States

Plant galls are some of nature’s most unusual creations. This hike will explore various plant communities to look for this unusual relationship between plant, animal, and usually a type of insect. Specimens may include the striped volcano, witch’s hat, spined … Read more

$9 – $10

Save Mount Diablo: Borges Ranch Fall Hike

Old Borges Ranch 1035 Castle Rock Road, Walnut Creek, CA, United States

Come and enjoy the fall weather on a three-mile walk through parts of this Walnut Creek open space. You’ll start at Borges Ranch and climb into the woodlands before circling around and following a fire trail through the grasslands back … Read more

Free

Simply Sibley

Sibley Volcanic Regional Preserve 6800 Skyline Blvd, Oakland, CA, United States

Loop around Round Top for views and fresh air while searching for migrating birds. Distance: 2.5-3 miles Ages: 7 years and up --> adult participation is required Drop-in event, no registration necessary Click here to find out more about this … Read more

Free

Nature Walk: Birds, Butterflies and Blooms

Mitchell Canyon 96 Mitchell Canyon Fire Rd, Clayton, CA, United States

Join naturalist Dan Fitzgerald for a nature walk in the Mitchell Canyon area. You will be looking for birds, butterflies, and some early/late Spring flowers. The walk is about 3 miles with some elevation gain. There is a limited number … Read more

$5 – $6

Save Mount Diablo: Black Diamond Mines Halloween Hike

Somersville Staging Area Black Diamond Mines Regional Preserve, Antioch, CA, United States

Come celebrate Halloween on the trails of Black Diamond Mines Regional Preserve - costumes are optional but encouraged! The route takes you to the old Rose Hill Cemetery and beyond; among the rocks and vegetation, look for signs of the … Read more

Free
Event Series Hike and Sip

Hike and Sip: Halloween Full Moon

Chabot Space and Science Center 10000 Skyline Blvd., Oakland, California

A perfect date night or fun with friends! Enjoy a beautiful sunset hike in the majestic Redwood forest, followed by stargazing on Chabot’s Observation Deck with drinks. Take in the fascinating history of Oakland, local plants, and Redwood trees with … Read more

$40

The Morning Side of Mt. Diablo from Morgan Territory

Save Mount Diablo 1901 Olympic Blvd Suite 320, Walnut Creek, CA, United States

You’ll hike Bob Walker Ridge through native Blue Oak forests and enjoy a close-up view of the eastern side of Mt Diablo from the cliffs where Prairie Falcons nest in the spring. The first half of the hike will be … Read more

Free

Vasco Caves Regional Preserve Tour

Round Valley Regional Preserve 19450 Marsh Creek Rd, Brentwood, CA, United States

Join this tour in celebrating National Native American Heritage Month by hiking 2-3 miles through this wild and windswept land which is sacred to local California Indian communities and a refuge for golden eagles, fairy shrimp, and tiger salamanders. The … Read more

Vasco Caves Regional Preserve Tour

Round Valley Regional Preserve 19450 Marsh Creek Rd, Brentwood, CA, United States

Join this tour in celebrating National Native American Heritage Month by hiking 2-3 miles through this wild and windswept land which is sacred to local California Indian communities and a refuge for golden eagles, fairy shrimp, and tiger salamanders. The … Read more

History Hike ABOVE the Mines!

Black Diamond Mines Regional Preserve 5175 Somersville Road, Antioch, CA, United States

Black Diamond Mines Regional Preserve was once teeming with thriving communities. Join a Naturalist on a 2-3 mile hike to learn about the richness of the coal and sand mining history on a hike above the mines. No underground mine … Read more

Free

Nature Walk: Birds, Butterflies and Blooms

Mitchell Canyon 96 Mitchell Canyon Fire Rd, Clayton, CA, United States

Join naturalist Dan Fitzgerald for a nature walk in the Mitchell Canyon area. You will be looking for birds, butterflies, and some early/late Spring flowers. The walk is about 3 miles with some elevation gain. There is a limited number … Read more

$5 – $6

Nature Walk: Birds, Butterflies and Blooms

Mitchell Canyon 96 Mitchell Canyon Fire Rd, Clayton, CA, United States

Join naturalist Dan Fitzgerald for a nature walk in the Mitchell Canyon area. You will be looking for birds, butterflies, and some early/late Spring flowers. The walk is about 3 miles with some elevation gain. There is a limited number … Read more

$5 – $6