Free Events and Things to do in Castro Valley, CA

Search for something you love or check out popular events in your area.

Neighborhood Organizing Training 2: Growing your Neighborhood Group
Wed, Mar 18, 6:00 PM
Berkeley · Berkeley Public Library - Tarea Hall Pittman South Branch
Neighborhood Organizing Training 2: Growing your Neighborhood Group
Wed, Mar 18, 6:00 PM
Berkeley · Berkeley Public Library - Tarea Hall Pittman South Branch
Almost full
Amazing Animal Journeys
Sun, Mar 22, 11:00 AM
Fremont · Don Edwards San Francisco Bay National Wildlife Refuge
Almost full
Amazing Animal Journeys
Sun, Mar 22, 11:00 AM
Fremont · Don Edwards San Francisco Bay National Wildlife Refuge
Sales end soon
Danville & Alamo | Exploremore with Girl Scouts!
Monday at 5:00 PM
Danville · Creekside Elementary, MPR
Sales end soon
Danville & Alamo | Exploremore with Girl Scouts!
Monday at 5:00 PM
Danville · Creekside Elementary, MPR
Eid Banquet
Thu, Apr 9, 2:00 PM
Hayward · Chabot College
Eid Banquet
Thu, Apr 9, 2:00 PM
Hayward · Chabot College
Queer & Asian Conference (QACON) 2026
Sun, Apr 12, 9:00 AM
Berkeley · UC Berkeley Student Union: Martin Luther King Jr. Building
Queer & Asian Conference (QACON) 2026
Sun, Apr 12, 9:00 AM
Berkeley · UC Berkeley Student Union: Martin Luther King Jr. Building
Beyond the Stack: An IT Networking Evening
Today at 5:00 PM
Oakland · Cellarmaker House of Pizza
Beyond the Stack: An IT Networking Evening
Today at 5:00 PM
Oakland · Cellarmaker House of Pizza
Almost full
The Darkroom San Francisco Photowalk
Sat, Mar 21, 3:00 PM
San Francisco · China Basin Park
Almost full
The Darkroom San Francisco Photowalk
Sat, Mar 21, 3:00 PM
San Francisco · China Basin Park
Going fast
Tidal Marsh Restoration Volunteer Day at Eden Landing in Union City, CA
Sat, Mar 28, 9:00 AM
Union City · Eden Landing Ecological Reserve
Going fast
Tidal Marsh Restoration Volunteer Day at Eden Landing in Union City, CA
Sat, Mar 28, 9:00 AM
Union City · Eden Landing Ecological Reserve
DIA General Meeting & Board Election
Wed, Apr 1, 7:00 PM
Oakland · Oakland Public Library: Dimond Branch
DIA General Meeting & Board Election
Wed, Apr 1, 7:00 PM
Oakland · Oakland Public Library: Dimond Branch
Sales end soon
4th LepreCon Hayward 2026
Saturday at 6:00 PM
Hayward · Hayward
Sales end soon
4th LepreCon Hayward 2026
Saturday at 6:00 PM
Hayward · Hayward
Stand-up Comedy at Birdhaus in Union City
Fri, Mar 20, 7:00 PM
Union City · Birdhaus Beer Garden
Stand-up Comedy at Birdhaus in Union City
Fri, Mar 20, 7:00 PM
Union City · Birdhaus Beer Garden
For Retirees: "The 3 most important Social Security and Medicare move”
Sat, Mar 21, 10:00 AM
San Ramon · 3160 Crow Canyon Rd suite 400
For Retirees: "The 3 most important Social Security and Medicare move”
Sat, Mar 21, 10:00 AM
San Ramon · 3160 Crow Canyon Rd suite 400
Acton Children's Business Fair
Sat, Mar 28, 1:00 PM
Oakland · 215 Washington St
Acton Children's Business Fair
Sat, Mar 28, 1:00 PM
Oakland · 215 Washington St
Cynthia D’Aprix Sweeney's LAKE EFFECT In-Store Event And Book Signing
Sun, Mar 22, 6:00 PM
Berkeley · Mrs Dalloway's
Cynthia D’Aprix Sweeney's LAKE EFFECT In-Store Event And Book Signing
Sun, Mar 22, 6:00 PM
Berkeley · Mrs Dalloway's
Smalltown's Comedy LAB
Wed, Mar 18, 7:00 PM
Castro Valley · The Clinic
Smalltown's Comedy LAB
Wed, Mar 18, 7:00 PM
Castro Valley · The Clinic
Starting Veggies from Seed and Cuttings
Sat, Mar 28, 10:00 AM
Fremont · LEAF Community Garden
Starting Veggies from Seed and Cuttings
Sat, Mar 28, 10:00 AM
Fremont · LEAF Community Garden
Almost full
User Group Meeting – March 25, 2025
Wed, Mar 25, 1:00 PM
Redwood City · 101 Twin Dolphin Dr
Almost full
User Group Meeting – March 25, 2025
Wed, Mar 25, 1:00 PM
Redwood City · 101 Twin Dolphin Dr
UC Berkeley Grad Slam Competition
Wed, Apr 8, 3:00 PM
Berkeley · Sutardja Dai Hall
UC Berkeley Grad Slam Competition
Wed, Apr 8, 3:00 PM
Berkeley · Sutardja Dai Hall
CM Testing Event
Sat, Apr 4, 10:00 AM
San Ramon · Bollinger Canyon Road
CM Testing Event
Sat, Apr 4, 10:00 AM
San Ramon · Bollinger Canyon Road
Girls Talk Money: Breaking Barriers, Building Wealth
Thu, Mar 26, 1:00 PM
San Ramon · 3160 Crow Canyon Rd suite 150
Girls Talk Money: Breaking Barriers, Building Wealth
Thu, Mar 26, 1:00 PM
San Ramon · 3160 Crow Canyon Rd suite 150

Trends in Castro Valley

Explore more trends

Frequently asked questions about Castro Valley

What are the best free events to attend?

According to Eventbrite, the best free events are:

Amazing Animal Journeys

Eid Banquet

Queer & Asian Conference (QACON) 2026

The Darkroom San Francisco Photowalk

Which events are currently trending in Castro Valley?

The trending searches this month in Castro Valley are:

k pop demon hunters

san francisco

free events in the bay area

crab feed

Which free events are coming up?

Discover the best free events happening soon – you don't want to miss them:

Beyond the Stack: An IT Networking Evening

4th LepreCon Hayward 2026

Danville & Alamo | Exploremore with Girl Scouts!

Neighborhood Organizing Training 2: Growing your Neighborhood Group

Neighborhood Organizing Training 2: Growing your Neighborhood Group

Neighborhood Organizing Training 2: Growing your Neighborhood Group

Amazing Animal Journeys

Amazing Animal Journeys

Danville & Alamo | Exploremore with Girl Scouts!

Danville & Alamo | Exploremore with Girl Scouts!

Eid Banquet

Eid Banquet

Queer & Asian Conference (QACON) 2026

Queer & Asian Conference (QACON) 2026

Beyond the Stack: An IT Networking Evening

Beyond the Stack: An IT Networking Evening

The Darkroom San Francisco Photowalk

The Darkroom San Francisco Photowalk

Tidal Marsh Restoration Volunteer Day at Eden Landing in Union City, CA

Tidal Marsh Restoration Volunteer Day at Eden Landing in Union City, CA

DIA General Meeting & Board Election

DIA General Meeting & Board Election

4th LepreCon Hayward 2026

4th LepreCon Hayward 2026

Stand-up Comedy at Birdhaus in Union City

Stand-up Comedy at Birdhaus in Union City

For Retirees: "The 3 most important Social Security and Medicare move”

For Retirees: "The 3 most important Social Security and Medicare move”

Acton Children's Business Fair

Acton Children's Business Fair

Cynthia D’Aprix Sweeney's LAKE EFFECT In-Store Event And Book Signing

Cynthia D’Aprix Sweeney's LAKE EFFECT In-Store Event And Book Signing

Smalltown's Comedy LAB

Smalltown's Comedy LAB

Starting Veggies from Seed and Cuttings

Starting Veggies from Seed and Cuttings

User Group Meeting – March 25, 2025

User Group Meeting – March 25, 2025

UC Berkeley Grad Slam Competition

UC Berkeley Grad Slam Competition

CM Testing Event

CM Testing Event

Girls Talk Money: Breaking Barriers, Building Wealth

Girls Talk Money: Breaking Barriers, Building Wealth

Things to do around Castro Valley

Trends in Castro Valley

1. K pop demon hunters

2. San francisco

3. Free events in the bay area

4. Crab feed

5. Jaripeo baile

6. Kids activities

7. Egg hunt

8. Job fair

9. American graffiti

10. Kids events

11. Bay area black fashion expo

12. Live music

What are the best free events to attend?

Which events are currently trending in Castro Valley?

Which free events are coming up?