Free Events & Activities in Castro Valley, CA

Free things to do in Castro Valley, CA — festivals, library events, park activities, and community happenings. No cost, all fun.

50 results found

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Photo by Createasea on Unsplash — representative image for Art Explorations: Paint Your Emotions

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KidsFree

Art Explorations: Paint Your Emotions

In 2 days · Wed, Apr 15, 11:30 PM–12:30 AM UTC · Joyce Ellington Branch Library · 491 E. Empire St, San Jose, CA

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Photo by Araceli Magaña on Unsplash — representative image for Mariela's Music Time

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KidsFree

Mariela's Music Time

In 3 days · Thu, Apr 16, 5:30 PM–6:15 PM UTC · Asian Branch Branch Library · 388 Ninth Street, Suite 190, Oakland, CA

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Photo by Tom Wheatley on Unsplash — representative image for Don Edwards SF Bay National Wildlife Refuge

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Don Edwards SF Bay National Wildlife Refuge

Don Edwards SF Bay National Wildlife Refuge · 9500 Thornton Ave, Newark, CA

Outdoor Space in Newark, CA

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Photo by Saung Digital on Unsplash — representative image for Asistencia para Búsqueda de Trabajo

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KidsFree

Asistencia para Búsqueda de Trabajo

Tomorrow · Tue, Apr 14, 5:00 PM–1:00 AM UTC · Educational Park Branch Library · 1772 Educational Park Dr., San Jose, CA

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Photo by Adedotun Adegborioye on Unsplash — representative image for California Writers Club - South Bay Writers Open Mic

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KidsFree

California Writers Club - South Bay Writers Open Mic

In 4 days · Sat, Apr 18, 2:30 AM–4:30 AM UTC · Willow Glen Branch Library · 1157 Minnesota Ave, San Jose, CA

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Photo by Himmel S on Unsplash — representative image for Quarry Lakes Drive Park Entrance

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KidsFreeOutdoor

Quarry Lakes Drive Park Entrance

Quarry Lakes Drive Park Entrance · East Bay, CA

Outdoor Space in East Bay, CA

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Photo by Edwin Petrus on Unsplash — representative image for Soul, Sonics, and Soundsystems Sound Art Exhibition + High Fidelity Listening Room + Archival Display

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KidsFree

Soul, Sonics, and Soundsystems Sound Art Exhibition + High Fidelity Listening Room + Archival Display

Happening now · Feb 26 – Apr 30 · Main Library TeenZone Branch Library · 125 14th Street, Oakland, CA

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Photo by Centre for Ageing Better on Unsplash — representative image for Friends of the Village Square Library Lobby Book Sale

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KidsFree

Friends of the Village Square Library Lobby Book Sale

In 4 days · Fri, Apr 17, 9:00 PM–12:00 AM UTC · Village Square Branch Library · 4001 Evergreen Village Square, San Jose, CA

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Photo by MChe Lee on Unsplash — representative image for Fremont Centerville Farmers' Market

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Fremont Centerville Farmers' Market

Fremont Centerville Farmers' Market · Bonde Way & Fremont Blvd, Fremont, CA

Farmers Market in Fremont, CA

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Photo by Vishnu Mohanan on Unsplash — representative image for Astrophotography 101: Intro to Deep Sky Imaging

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Free

Astrophotography 101: Intro to Deep Sky Imaging

In 3 days · Fri, Apr 17, 2:00 AM–5:00 AM UTC · Chabot Space & Science Center · 10000 Skyline Blvd, Oakland, CA 94619, Oakland, CA

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Photo by Jorge Escobedo on Unsplash — representative image for Sneaker Museum Oakland Presents: Sports World — The Good, The Bad & The Ugly

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KidsFree

Sneaker Museum Oakland Presents: Sports World — The Good, The Bad & The Ugly

In 5 days · Sat, Apr 18, 9:00 PM–10:00 PM UTC · Milpitas Library · 160 North Main Street, Milpitas, CA

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Photo by Jayanth Muppaneni on Unsplash — representative image for César E. Chávez Branch Branch Library

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César E. Chávez Branch Branch Library

César E. Chávez Branch Branch Library · 3301 East 12th Street, Suite 271, Oakland, CA

Library Program in Oakland, CA

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Photo by Alex Lvrs on Unsplash — representative image for International Film Festival

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KidsFree

International Film Festival

In 6 days · Sun, Apr 19, 7:00 PM–12:30 AM UTC · Milpitas Library · 160 North Main Street, Milpitas, CA

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Photo by Yoksel 🌿 Zok on Unsplash — representative image for Friday Nights at OMCA with The Philharmonik

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KidsFree

Friday Nights at OMCA with The Philharmonik

In 4 days · Sat, Apr 18, 12:00 AM–4:00 AM UTC · OMCA campus · Oakland, CA

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Photo by Keisha Kim on Unsplash — representative image for African American Museum and Library at Oakland Branch Library

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African American Museum and Library at Oakland Branch Library

African American Museum and Library at Oakland Branch Library · 659 14th Street, Oakland, CA

Library Program in Oakland, CA

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Photo by Bernd Dittrich on Unsplash — representative image for Fairgrounds Bingo

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KidsFree

Fairgrounds Bingo

Happening now · Jan 2 – Dec 21 · Santa Clara County Fairgrounds · 344 Tully Rd, San Jose, CA

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Photo by Miikka Luotio on Unsplash — representative image for Concert: Sound Impact!

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KidsFree

Concert: Sound Impact!

In 5 days · Sat, Apr 18, 10:00 PM–11:00 PM UTC · Rinconada Library · 1213 Newell Rd., Palo Alto, CA

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Photo by Jayanth Muppaneni on Unsplash — representative image for Martin Luther King Jr. Branch Branch Library

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Martin Luther King Jr. Branch Branch Library

Martin Luther King Jr. Branch Branch Library · 6833 International Boulevard, Oakland, CA

Library Program in Oakland, CA

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Photo by Nishant Kulkarni on Unsplash — representative image for Matcha – Taste & Create Clay Workshop

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KidsFree

Matcha – Taste & Create Clay Workshop

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Earl Wilcox on Unsplash — representative image for Clay Workshop for Adults

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KidsFree

Clay Workshop for Adults

Happening now · Mar 16 – Jun 14 · Color Me Mine Daly City · 445 Westlake Shopping Center, Daly City, CA

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Photo by Samuel Myles on Unsplash — representative image for West Oakland Branch Branch Library

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KidsFreeOutdoor

West Oakland Branch Branch Library

West Oakland Branch Branch Library · 1801 Adeline Street, Oakland, CA

Library Program in Oakland, CA

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Photo by Geert Pieters on Unsplash — representative image for Stoneware CLAY Workshop

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KidsFree

Stoneware CLAY Workshop

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Jeswin Thomas on Unsplash — representative image for Mommy and Me Spring painting

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KidsFree

Mommy and Me Spring painting

Happening now · Mar 16 – Jun 14 · Color Me Mine San Jose (Oakridge Mall) · 925 Blossom Hill Rd., San Jose, CA

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Photo by Andrej Lisakov on Unsplash — representative image for Asian Branch Branch Library

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KidsFreeOutdoor

Asian Branch Branch Library

Asian Branch Branch Library · 388 Ninth Street, Suite 190, Oakland, CA

Library Program in Oakland, CA

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Photo by Earl Wilcox on Unsplash — representative image for Valentine's Date Night

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KidsFree

Valentine's Date Night

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Nishant Kulkarni on Unsplash — representative image for Clay Holiday Adult Workshop

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KidsFree

Clay Holiday Adult Workshop

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Saung Digital on Unsplash — representative image for Bascom Community Center and Library

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KidsFreeOutdoor

Bascom Community Center and Library

Bascom Community Center and Library · 1000 S. Bascom Ave., San Jose, CA

Community Meetup in San Jose, CA

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Photo by Camila Mofsovich on Unsplash — representative image for Clay Workshop 12/19

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KidsFree

Clay Workshop 12/19

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Yiran Yang on Unsplash — representative image for Summer Camp Now Enrolling

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KidsFree

Summer Camp Now Enrolling

Happening now · Mar 16 – Jun 14 · Color Me Mine Daly City · 445 Westlake Shopping Center, Daly City, CA

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Photo by Stas Muravev on Unsplash — representative image for Little Hills & Las Trampas Stables

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KidsFreeOutdoor

Little Hills & Las Trampas Stables

Little Hills & Las Trampas Stables · East Bay, CA

Outdoor Space in East Bay, CA

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Photo by Earl Wilcox on Unsplash — representative image for Special Kids Night Out w/ BONUS

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KidsFree

Special Kids Night Out w/ BONUS

Happening now · Mar 16 – Jun 14 · Color Me Mine Daly City · 445 Westlake Shopping Center, Daly City, CA

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Photo by Frederick Shaw on Unsplash — representative image for Seder Plate Workshop

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KidsFree

Seder Plate Workshop

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Armin Narimani on Unsplash — representative image for Willow Glen Branch Library

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KidsFreeOutdoor

Willow Glen Branch Library

Willow Glen Branch Library · 1157 Minnesota Ave, San Jose, CA

Library Program in San Jose, CA

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Photo by Aleyna Çatak on Unsplash — representative image for Paint With The Easter Bunny

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KidsFree

Paint With The Easter Bunny

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Createasea on Unsplash — representative image for Boos & Brushes – Adult Only Halloween Paint Night

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KidsFree

Boos & Brushes – Adult Only Halloween Paint Night

Happening now · Mar 16 – Jun 14 · Color Me Mine Daly City · 445 Westlake Shopping Center, Daly City, CA

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Photo by Himmel S on Unsplash — representative image for Raymond Bernal Jr. Memorial Park

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FreeOutdoor

Raymond Bernal Jr. Memorial Park

Raymond Bernal Jr. Memorial Park · N. 7th St. & E. Hedding St., San Jose, CA

Outdoor Space in San Jose, CA

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Photo by Jun Ren on Unsplash — representative image for Light Up Your Holiday Event

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KidsFree

Light Up Your Holiday Event

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Iqbal Tarigan on Unsplash — representative image for Stoneware Workshop 3/27

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KidsFree

Stoneware Workshop 3/27

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Wes Hicks on Unsplash — representative image for Frank M. Santana Park

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FreeOutdoor

Frank M. Santana Park

Frank M. Santana Park · 511 S Monroe St, San Jose, CA

Outdoor Space in San Jose, CA

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Photo by Earl Wilcox on Unsplash — representative image for Kids Night Out -2026 Lineup

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KidsFree

Kids Night Out -2026 Lineup

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Tasha Kostyuk on Unsplash — representative image for Stoneware Workshop Feb 6

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KidsFree

Stoneware Workshop Feb 6

Happening now · Mar 16 – Jun 14 · Color Me Mine Alameda · 2205 S. Shore Center, Alameda, CA

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Photo by Aleksandra Sapozhnikova on Unsplash — representative image for John P. McEnery Park

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FreeOutdoor

John P. McEnery Park

John P. McEnery Park · W San Fernando St. & 87, San Jose, CA

Outdoor Space in San Jose, CA

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Photo by Vitaly Gariev on Unsplash — representative image for Birthday Plate Workshop 3/27

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KidsFree

Birthday Plate Workshop 3/27

Happening now · Mar 16 – Jun 14 · Color Me Mine Daly City · 445 Westlake Shopping Center, Daly City, CA

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Photo by Ragnar Beaverson on Unsplash — representative image for Mahjong Club

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KidsFree

Mahjong Club

Tue, Apr 14, 12:30 AM–2:30 AM UTC · Downtown Library · 224 Church St, Santa Cruz, CA 95060, Santa Cruz, CA

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Photo by Tanya Barrow on Unsplash — representative image for O'Donnell's Gardens Park

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FreeOutdoor

O'Donnell's Gardens Park

O'Donnell's Gardens Park · E. Willim St. & S. 6th St., San Jose, CA

Outdoor Space in San Jose, CA

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Photo by Ryu Orn on Unsplash — representative image for Spring Art Series: Introduction to Digital Art with Kelsey Phillips

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KidsFree

Spring Art Series: Introduction to Digital Art with Kelsey Phillips

In 5 days · Sat, Apr 18, 8:00 PM–10:00 PM UTC · Downtown Library · 224 Church St, Santa Cruz, CA 95060, Santa Cruz, CA · Ages 13+

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Photo by Võ Mạnh Đức on Unsplash — representative image for The Sense of Beauty: Six Centuries of Painting from Museo de Arte de Ponce

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Free

The Sense of Beauty: Six Centuries of Painting from Museo de Arte de Ponce

Happening now · Feb 1 – May 25 · Crocker Art Museum · 216 O Street, Sacramento, CA

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Photo by Bovia & Co. Photography on Unsplash — representative image for Santa Clara Farmers' Market

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KidsFreeOutdoor

Santa Clara Farmers' Market

Santa Clara Farmers' Market · Jackson St & Homestead Rd, Santa Clara, CA

Farmers Market in Santa Clara, CA

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Photo by Dan Cook on Unsplash — representative image for Festive Fun, Paint and Party

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KidsFree

Festive Fun, Paint and Party

Happening now · Mar 16 – Jun 14 · Color Me Mine Natomas · 3581 Truxel Rd., Sacramento, CA

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Photo by Mathieu Stern on Unsplash — representative image for AARP Tax Preparation

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Free

AARP Tax Preparation

Starts in 12 hrs · Mon, Apr 13, 4:00 PM–8:00 PM UTC · Downtown Library · 224 Church St, Santa Cruz, CA 95060, Santa Cruz, CA

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