Antioch Rotary Bunny Hop 5K in Antioch
2026-04-04 09:00 - 11:30 (America/Los_Angeles) | Antioch Community Park, 801 James Donlon Blvd, Antioch, CA, 94509, CA, 94509, United States
Join the Antioch Rotary Club for a fun, family-friendly 5K at Antioch Community Park. The event includes a timed run, kids’ activities, an Easter egg hunt, and a free pancake breakfast.

East County Historical Society Museum Opening Day in Brentwood
2026-04-04 09:00 - 14:00 | East Contra Costa Historical Society, 3890 Sellers Avenue, Brentwood, CA, 94513, United States
Join the East Contra Costa Historical Society for its Museum Opening Day in Brentwood. The family-friendly event features museum exhibits, a petting zoo, games, music, quilts, and ice cream.
A pancake breakfast hosted by the Brentwood Lions Club will be available from 9:00 a.m. to noon for an additional cost. Admission to the event is free.

Easter Egg Hunt in Isleton
2026-04-04 10:00 | Wilson Park
Free family event at Wilson Park at Andrus Circle Drive and Jackson Slough Road in Isleton.

Egg Hunt and Pet Event in Knightsen
2026-04-04 10:00 - 12:00 | Knightsen School, 1923 Delta Rd, Knightsen, CA, 94548, United States
Free event featuring pets – adoptable dogs and puppies! – eggs, games, and music for ages 14 and younger. Egg hunters must be pre-registered. All family members welcome.

Egg Hunt and Easter Bunny in Antioch
2026-04-04 11:00 - 17:00 | Downtown Antioch, Antioch, CA, United States
The Downtown Antioch Association presents Egg Hunt & Easter Bunny:
11 a.m.-1 p.m. at the Rivertown Treasure Chest: bunny pics and plushies donated by K911 Animal Rescue.
12:30-4 p.m. at Royal Banquet and Event Halls: bunny pics and egg hunt for prizes and more plushies.
4-5 p.m. at Waldie Plaza: egg hunts, bunny pics, Easter baskets and more plushies with Rivertown Community Church and Team Jesus Outreach Ministries.

Learn How to Make Sauerkraut in Benicia
2026-04-04 12:00 - 13:00 | New Harbor Community Church, 4858 E 2nd St, Benicia, CA, 94510, United States
Join Benicia Fermentory for a hands-on fermentation workshop, a beginner-friendly class about the art and science of traditional fermentation. You’ll leave with your own jar of probiotic-rich sauerkraut to take home.
We’ll cover:
• The fundamentals of fermentation
• How to safely ferment vegetables at home
• The health benefits of fermented foods
• Flavor variations and tips for success
More information here.

58th Annual Antiques and Collectibles Show in Antioch
2026-04-10 09:00 - 2026-04-11 15:00 | Contra Costa Event Park (Fairgrounds) Sunset Hall, 1201 W 10th Street, Antioch, CA, 94509, United States
The Golden Gate Historical Bottle Society will host its annual Bottles, Insulators, Antiques, and Collectibles Show and Sale at the Contra Costa Event Park in Antioch. The two-day event features vendors, collectibles, and free walk-in appraisals.
Admission is $10 on Friday and free on Saturday.

East Bay Anza 250 Symposium in Pittsburg
2026-04-11 09:00 - 16:00 | Los Medanos College — Student Union Building, 2700 East Leland Road, Pittsburg, CA, 94565, United States
The East Bay Anza 250 Symposium will explore the impact of the 1775–76 Juan Bautista de Anza expedition and its lasting influence on the East Bay. The event will bring together historians, educators, land managers, and community leaders to discuss the expedition’s history, Indigenous legacies, and how this past continues to shape the region today.
The symposium is part of the commemoration of the 250th anniversary of the Anza expedition.

Sip and Stroll in Oakley
2026-04-16 18:30 - 20:00 | Big Break Regional Shoreline, 69 Big Break Rd, Oakley, CA, 94561
Join Big Break for a monthly social hour featuring themed mocktails, hors d’oeuvres, an art activity, and an evening stroll in the park. This drop-in program is held every third Thursday of the month and meets at the Visitor Center.
The event is free and open to adults ages 18 and older.

History Hike and History Tour in Locke
2026-04-18 09:00 | Delta Meadows Park Property, 13971 River Rd, Walnut Grove, CA, 95690, United States
Enjoy Delta Meadows’ video about one piece of Locke history: the gong shown here! (Link goes to Facebook post.)
Enjoy at 2.5 mile hike through the Delta Meadows Park Property along its Railroad Trail and hear about the people and institutions that have shaped area history, including Chinese immigrants from Zhongshan, the Southern Pacific Railroad, the rancher and millionaire George Locke, early settlers and trappers from the Hudson Bay Company, and the Junizumne tribelet of the Sierra Miwok, who inhabited the area originally for thousands of years and whose ancestor continue to live in the surrounding communities. Meet at 9 a.m. at the Delta Meadows parking lot, 13971 River Rd, Walnut Grove.
At noon, meet at the porch of the Locke Boarding House Museum (13916 Main St., Walnut Grove) for a Locke History Tour.

Keep Antioch Beautiful - Cleanup
2026-04-18 09:00 - 13:00 | Waldie Plaza, Waldie Plaza, Antioch, CA, 94509
Join volunteer cleanup efforts in Antioch honoring Earth Day and Arbor Day, with options at the Antioch Skate Park or Nick Rodriguez Center. Check in at 9 a.m., cleanup 9:30-11:30 a.m., free lunch for volunteers noon-1 p.m.. Learn more.

Contra Costa County Historical Society Book Club in Martinez
2026-04-18 10:30 - 12:00 | Contra Costa County Historical Society, 724 Escobar St, Martinez, CA, 94553, United States
Join the Contra Costa County Historical Society Book Club for its fourth meeting, featuring a discussion of “Ghosts of Black Diamond Mines.” A field trip will also take place to visit Rose Hill Cemetery.

Crab Feed 2026 in Martinez
2026-04-18 17:30 | Martinez Refinery Clubhouse, 1635 Pacheco Blvd, Martinez, CA, 94553, United States
Join the Martinez Historical Society for its annual crab feed fundraiser featuring Dungeness crab, an Italian-style dinner, live auction, raffle, and entertainment. Proceeds support the organization’s mission of preserving local history.
Doors open at 5:30 p.m. with dinner served at 7:00 p.m., followed by a program.

Tour of the Yolo Bypass Wildlife Area
2026-04-19 09:00 - 12:00 | Yolo Bypass Wildlife Area Headquarters, 45211 Chiles Road, Davis, CA, 95618, United States
The Yolo Bypass Wildlife Area tours are hosted on the third Sunday of the month from October through June. Learn about migratory bird species, flood management techniques, agricultural practices, native plants of the wetlands and more! Please dress in layers as weather can be unpredictable. Registration required; more information here.

Talk Story Films: Journey in Multiple Worlds in Stockton
2026-04-19 14:00 | Filipino American National Historical Society Museum, 337 E Weber Ave, Stockton, CA, 95202, United States
Attend a screening of two short Talk-Story films at the Filipino American National Historical Society Museum in Stockton, highlighting the lives of Manong Albert Juanitas and Manang Irene Estante Revillar.
This event is free and includes light refreshments.

California Duck Days in Davis
2026-04-25 09:00 - 16:00 | Yolo Basin Foundation, 45211 County Road 32B, Davis, CA, 95618, United States
California Duck Days is a family-friendly outdoor festival featuring wetland-themed arts and crafts, live animals, nature activities, and interactive exhibits for all ages. Food trucks will be on-site, and attendees are encouraged to bring a water bottle. No dogs allowed. Parking is available in the CA Department of Fish and Wildlife back lot.

Rio Vista Community Garden Grand Opening
2026-04-25 10:00 | Rio Vista Roots Community Garden, 350 S. 3rd St, Rio Vista, CA, United States
Help build a space rooted in connection, creativity, and sustainability at the Rio Vista Community Garden Grand Opening. Paint garden beds, plants seeds, do chalk art at this youth gardening event at the community garden, located at South 3rd Street and St. Gertrude’s Avenue.

Sunday at the Museum: History Talk in Crockett
2026-04-26 14:00 - 16:00 | Crockett Museum, 900 Loring Ave, Crockett, CA, 94525, United States
Descendants of George Morrison Rolph, the first plant manager of the California and Hawaiian Sugar Refining (C&H) company, will share stories about his life in early Crockett. The free program will take place at the Crockett Museum.

Spring Fashion Show in Antioch
2026-04-29 17:00 | La Plazuela Mexican Restaurant & Bar, 400 G St., Antioch, CA, United States
Fourth Annual Spring Fashion Show includes over 40 outfits, silent auction and raffle. Tickets are $10. Visit Rivertown Treasure Chest, contact Debbie Blaisure at (510) 909-4618, or email rivertowntreasurechest@gmail.com to make a reservation or for donate items for silent auction/raffle. All proceeds benefit the Downtown Antioch Association to support events that support local businesses.
More information.

Uno de Mayo in Rio Vista
2026-05-01 16:00 - 19:00 | Rio Vista, 116 Main Street, Rio Vista, CA, 94571, United States
Enjoy live mariachi, dance performances, churros and food, and drink specials at Rio Vista Downtown Association’s Uno de Mayo, from 2nd Street to the River.

Discovery Bay Boat Show
2026-05-02 - 2026-05-03 | Discovery Bay Marina, 5901 Marina Rd, Discovery Bay, CA, 94505, United States
Boat dealers, beer & wine garden, food and live music throughout the weekend – 10 a.m.-8 p.m. Saturday and 10 a.m.-5 p.m. Sunday. More information.

Riverfront Arts Fest in Rio Vista
2026-05-02 10:00 - 17:00 | Downtown Rio Vista, Rio Vista, CA, United States
People’s Choice Art Show, Youth Art Showcase, Artist Booth, Live Music, Beer & Wine Pavilion, Fine Art and Craft Vendors, Youth Art Activities, Art on Wheels and Waves, Walking Art, Gourmet Food Trucks. For information, call 707-646-1710 or visit this website.

Learn How to Make Fermented Pickles in Benicia
2026-05-02 12:00 - 13:00 | New Harbor Community Church, 4858 E 2nd St, Benicia, CA, 94510, United States
Learn to make traditional fermented pickles starting with fresh cucumbers and salt, and leave with the jar of pickles you make!
More information here.

Delta Informal Gardeners Annual Plant Sale in Brentwood
2026-05-09 08:00 - 13:00 | Delta Informal Gardeners, 3900 Sellers Ave, Brentwood, CA, 94513, United States
Join Delta Informal Gardeners for its annual plant sale, featuring a wide selection of healthy, beautiful annuals ($5), perennials + succulents ($8), 2-3 gal plants ($12); 5 gal/specialty items (individually priced). Carts and/or wagons are encouraged to enhance your plant-shopping experience.

VENMO, local checks, or cash ONLY
No resellers
No dogs

More information.

Spring Fling Craft and Vendor Fair in Brentwood
2026-05-09 09:00 - 13:00 | Brentwood Veterans Memorial Building, 757 1st St, Brentwood, CA, 94513, United States
Explore a diverse collection of vendors for a day of shopping, creativity and fun, and enjoy a mimosa while you shop. For vendor information, email brentwoodveteransbuilding@gmail.com.

Asian Pacific Spring Festival in Locke
2026-05-09 11:00 - 16:00 | Historic Locke, 13916 Main St, Walnut Grove, CA, 95690, United States
Join the Locke Foundation for its Asian Pacific Spring Festival in Locke. Enjoy lion dances, martial arts, taiko drumming, music, arts and crafts, and food.
Admission and parking are free. Schedule here.

Jazz and Blues Festival in Antioch
2026-05-09 11:00 - 18:00 | Antioch Williamson Ranch Park, Antioch, CA, 94531, United States
Music (Deer Valley Jazz Band, Charged Particles, Frankie G and the Conviction, Stratify, MJ’s Brass Boppers), artisan vendors, food trucks, and beer and wine. Williamson Ranch Park is located at Lone Tree Way and Hillcrest Avenue. More information.

Antioch Wine Festival
2026-05-09 11:00 - 20:00 | Antioch, Antioch, CA, United States
Enjoy Antioch cuisine, live music and entertainment, family-friendly activities, craft beer and cocktails, and more at West 2nd and G streets in Antioch. More information.

Through Time and Tule: A Delta Meadows History Walk in Locke
2026-05-16 09:00 | Delta Meadows Park Property, 13971 River Rd, Walnut Grove, CA, 95690, United States
Take a trip back through time and tule with a State Parks interpreter at the Delta Meadows Park Property! Meet in the Delta Meadows parking lot at 9 a.m. before stepping back in time along our Railroad Trail.
You will hear about the various figures that have shaped Delta Meadows throughout its history, including Chinese immigrants from Zhongshan, the Southern Pacific Railroad, the rancher and millionaire George Locke, early settlers and trappers from the Hudson Bay Company, and the Junizumne tribelet of the Sierra Miwok, who inhabited the area originally for thousands of years and whose ancestor continue to live in the surrounding communities.
Learn more.

River Ready in Sacramento
2026-05-16 09:00 - 12:00 | Sacramento Marina, Ramp Way, Sacramento, CA, United States
Vessel safety checks, nautical swap meet, boat demos, photo booth, talk to local marine law enforcement and first responders, local river businesses, lifejacket giveaway, prizes. To participate in the swap meet, register with sacmarina@cityofsacramento.org. More information.
