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Hiking Events and Things to do in Castro Valley, CA

Just added
Secrets of the Oaks
Sun, May 3, 10:30 AM
Cupertino · Picchetti Ranch Parking Lot
Just added
Secrets of the Oaks
Sun, May 3, 10:30 AM
Cupertino · Picchetti Ranch Parking Lot
Forest Bath - Spring Refresh!
Sat, Apr 4, 2:00 PM
Berkeley · Lower Fire Trail
Forest Bath - Spring Refresh!
Sat, Apr 4, 2:00 PM
Berkeley · Lower Fire Trail
Just added
Winter's Adaptations in the Oak Savanna
Sun, Dec 6, 9:00 AM
Byron · Los Vaqueros Marina Parking Lot
Just added
Winter's Adaptations in the Oak Savanna
Sun, Dec 6, 9:00 AM
Byron · Los Vaqueros Marina Parking Lot
Birding Mitchell Canyon
Tue, Apr 14, 8:00 AM
Clayton · Mitchell Canyon
Birding Mitchell Canyon
Tue, Apr 14, 8:00 AM
Clayton · Mitchell Canyon
Volunteer at Dig Deep Farms!
Today at 9:00 AM + 305 more
Fremont · 34600 Ardenwood Blvd
Volunteer at Dig Deep Farms!
Today at 9:00 AM + 305 more
Fremont · 34600 Ardenwood Blvd
5K Walk/Run Fundraiser
Sat, Apr 18, 9:00 AM
San Leandro · Marina Park
5K Walk/Run Fundraiser
Sat, Apr 18, 9:00 AM
San Leandro · Marina Park
Wildflower Photography Walk
Sat, Apr 11, 10:00 AM
Glen Ellen · Bouverie Preserve
Wildflower Photography Walk
Sat, Apr 11, 10:00 AM
Glen Ellen · Bouverie Preserve
Kiln Canyon Field Trip
Tue, Apr 7, 8:00 AM
Tracy · Carnegie State Vehicular Recreation Area
Kiln Canyon Field Trip
Tue, Apr 7, 8:00 AM
Tracy · Carnegie State Vehicular Recreation Area
April Open-Access Habitat Protection Day at Máyyan 'Ooyákma - Coyote Ridge
Sun, Apr 19, 10:30 AM + 1 more
Morgan Hill · Máyyan 'Ooyákma – Coyote Ridge Open Space Preserve
April Open-Access Habitat Protection Day at Máyyan 'Ooyákma - Coyote Ridge
Sun, Apr 19, 10:30 AM + 1 more
Morgan Hill · Máyyan 'Ooyákma – Coyote Ridge Open Space Preserve
Sales end soon
Sign Hill Stewards: Habitat Restoration
Friday at 7:30 AM + 8 more
South San Francisco · Sign Hill Parking Lot
Sales end soon
Sign Hill Stewards: Habitat Restoration
Friday at 7:30 AM + 8 more
South San Francisco · Sign Hill Parking Lot
Weekend Rocket Engineering Workshop (Ages 14–18)
Sat, Apr 4, 2:00 PM + 6 more
Oakland · Circuit Launch
Weekend Rocket Engineering Workshop (Ages 14–18)
Sat, Apr 4, 2:00 PM + 6 more
Oakland · Circuit Launch
Sales end soon
Friends & Neighbors Walking Club
Wednesday at 8:00 AM + 17 more
San Francisco · Allstar Donuts
Sales end soon
Friends & Neighbors Walking Club
Wednesday at 8:00 AM + 17 more
San Francisco · Allstar Donuts
Bair Island Volunteer Workday
Sat, Apr 11, 9:00 AM
Redwood City · Bair Island Public Parking
Bair Island Volunteer Workday
Sat, Apr 11, 9:00 AM
Redwood City · Bair Island Public Parking
Just added
Volunteer Outside: Habitat Restoration at Byrne Preserve in Los Altos Hills
Sun, Apr 19, 9:00 AM
Los Altos Hills · Byrne Preserve
Just added
Volunteer Outside: Habitat Restoration at Byrne Preserve in Los Altos Hills
Sun, Apr 19, 9:00 AM
Los Altos Hills · Byrne Preserve
Just added
Wildflowers and Fire Ecology Walk in Los Altos Hills at Byrne Preserve
Fri, Apr 24, 5:30 PM
Los Altos Hills · Byrne Preserve
Just added
Wildflowers and Fire Ecology Walk in Los Altos Hills at Byrne Preserve
Fri, Apr 24, 5:30 PM
Los Altos Hills · Byrne Preserve
Twilight Marsh Walk
Sat, Apr 18, 6:30 PM
Fremont · San Francisco Bay National Wildlife Refuge Visitor Center
Twilight Marsh Walk
Sat, Apr 18, 6:30 PM
Fremont · San Francisco Bay National Wildlife Refuge Visitor Center
Just added
Summit Ascent: The Sunset Circle
Sat, May 30, 4:30 PM
San Jose · Mt Umunhum Picnic Area
Just added
Summit Ascent: The Sunset Circle
Sat, May 30, 4:30 PM
San Jose · Mt Umunhum Picnic Area
East Bay Anza 250 Symposium
Sat, Apr 11, 9:00 AM
Pittsburg · Los Medanos College -- Student Union Building
East Bay Anza 250 Symposium
Sat, Apr 11, 9:00 AM
Pittsburg · Los Medanos College -- Student Union Building
2026 Mothman Mayhem Miles 1M 5K 10K 13.1 26.2
Sat, Feb 7, 1:00 PM
San Francisco · San Francisco
2026 Mothman Mayhem Miles 1M 5K 10K 13.1 26.2
Sat, Feb 7, 1:00 PM
San Francisco · San Francisco
3P Training Spring Camp (3rd-8th grade)
Tue, Apr 7, 9:00 AM
Hayward · House of Hustle
3P Training Spring Camp (3rd-8th grade)
Tue, Apr 7, 9:00 AM
Hayward · House of Hustle

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