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Contra Costa Earth Day Events 2025

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The number 2025 where the 2's and the 5 are comprised of greenery. The 0 is half of the earth with a tree growing out of soil sitting in the half-Earth like a planter.

Earth Day Events

All Month

  • Iron Horse Trail or Online: Go With the Flow – A biking (or walking) tour of Central San’s service area, following the flow of wastewater for 21 miles along the Iron Horse Regional Trail from San Ramon to Martinez. Explore all or part of the route in person or travel it virtually with the guided map tour. Self-guided tour. Location: Iron Horse Trail or online.

Thursday, April 24

  • Pleasant Hill: Earth Day Celebration at City Hall – Ride your bikes down to the event and enjoy FREE bike repair from Tasty Cycle, the little ones can take part in storytime at 5:30 with the Pleasant Hill Library’s master storyteller Patrick Remer, food trucks will be on site until 9pm, and there will be booths with information and demonstrations from over 10 vendors. 5-7pm, Pleasant Hill City Hall.

Saturday, April 26

  • Antioch: Keep Antioch Beautiful Cleanup – Join the City of Antioch and help beautify the community by volunteering to do trash cleanup Downtown or plant flowers at Prewett Community Park. After your hard work, enjoy a volunteer appreciation lunch. 9am-1pm, Antioch Water Park & Waldie Plaza.
  • Antioch: Upper Sand Creek Basin Cleanup – Join the Contra Costa Resource Conservation District (CCRCD) for a trash cleanup at Upper Sand Creek Basin to celebrate Earth Day. Cleanup 9am-noon, Upper Sand Creek Basin.
  • Crockett: Earth Day Cleanup in Crockett – Celebrate Crockett’s 5th Annual Earth Day with a waterfront cleanup from 10am to 1pm. Toss on your boots and gloves and help the CCRCD make a difference! Cleanup 10am-1pm, Crockett Waterfront.
  • Martinez: John Muir’s Birthday / Earth Day Celebration – A wonderful fun-filled family day in the sun, at the grounds of the John Muir National Historic Site, which includes his 1880s Victorian home and an authentic 1849 Mexican Adobe, along with his orchards and vineyard. There will be youth activities, food and live music, and many displays relating to history, ecology, and nature. Free admission. 10am-4pm, John Muir Historic Site.
  • Orinda: Earth Day Spring Carnival – An event for families with children in elementary school in honor of Earth Day. Enjoy nature-themed carnival activities at the Orinda Day of Action. Event is free. Orinda Library Plaza (26 Orinda Way), 9-11am.
  • Walnut Creek: Unity of Walnut Creek – Tending Our Sacred Grounds – During the event, volunteers can enjoy an Earth Day ceremony, help clean up the grounds, and are welcome to bring a potluck item to share with others who care about the environment. 10am-1pm Cleanup projects. 1-2pm Plant-based potluck. Unity Center of Walnut Creek, 1871 Geary Rd.

Sunday, April 27

  • Emeryville: Shorebird Park Shoreline Cleanup – Come out to Shorebird Park on Sunday, any time from 9am-noon. Snacks and refreshments provided. As always, bring what you can (e.g. gloves, grabber, garden digging claw). Organizers will have limited supplies for those who show up without any of the above. Shorebird Park, 9am-noon.
  • Lafayette: Lafayette Earth Day Festival – Learn how you can help our planet at this family-friendly festival. Lafayette Plaza Park, 11am-2pm.

2019 Earth Day Events

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Earth Day is Monday, April 22! We’ve pulled together a list of Earth Day celebrations in Contra Costa, happening through Sunday, April 28.

If you see a ☀ next to an event listing, it means 511 Contra Costa staff will have a table at the event. Say hello, pick up some 511CC swag & get info on bonuses for trying an alternative (and environmentally friendly) commute.

Click any link below for additional information

Earth Day Events

Saturday, April 20

  • Antioch: Upper Sand Creek Basin – Spend the morning in the beautiful Upper Sand Creek watershed, exploring an area that is usually closed to the public. Volunteer activities include trash pickup, invasive species removal, and planting native flora. Upper Sand Creek Basin, 6600 Deer Valley Rd, 9am-12pm.
  • Clayton: Clayton Cleans Up – Community clean-up day; volunteers check in at Clayton City Hall. Various locations. 9am-12pm (Must complete registration form; for more info call the Pioneer at (925) 672-0500.
  • Crockett: Crockett Shoreline Cleanup – Join the Carquinez Watershed Council in a celebration of Earth Day. The Carquinez Regional Environmental Education Center will be hosting a free planting party for the whole family; volunteers will be cleaning up trash and doing a trash assessment at the site. Crockett Shoreline, 10am-2pm.
  • Martinez ☀: John Muir Birthday–Earth Day Celebration – 511CC staff will be giving each person who bikes to the event a $5 Jamba Juice gift card. Celebrate pioneering naturalist John Muir’s 181st birthday at his former home while learning practical ways to help the planet thrive. There will be live music, activities for the kids and other entertainment. John Muir National Historic Site, 10am-4pm. 511CC giving people who bike to the event $5 Jamba Juice gift cards
  • Port Costa: Port Costa Earth Day Cleanup – Meet at the café in Port Costa for coffee and snacks in the morning, followed by an Earth Day cleanup of the Port Costa Shoreline! 2 Canyon Lake Dr, Port Costa, 9am-12pm.
  • Richmond: North Richmond Earth Day Cleanup & Celebration – Help clean up Wildcat Creek at Verde Elementary School. After the creek cleanup, enjoy the North Richmond Earth Day Celebration at Shields-Reid Park and Community Center including food, live performances, kids activities, and more! The Watershed Project will be hosting fun and educational watershed activities for kids of all ages. Cleanup 9-11am, festival 11am-2pm.

Sunday, April 21

Monday, April 22

  • Pleasant Hill ☀: Diablo Valley College Earth Day – Meet the experts, ask questions, and learn what you can do to be more sustainable. Live entertainment, giveaways, and free food. All are welcome. Commons at DVC, 321 Golf Club Rd, 11am-2pm. 

Tuesday, April 23

  • Pleasant Hill ☀: Kaiser Permanente Walnut Creek Earth Day Celebration – A day of ecologically oriented fun including a recycling contest! All ages welcome. Kaiser Permanente Medical Center – Main Courtyard, 1425 S Main St, Walnut Creek, 11:30am-1:30pm.

Wednesday, April 24

  • Concord ☀: ASI Earth Week Festival – Celebrate sustainability and Mother Earth on the CSUEB Concord campus! Talk with featured organizations and enjoy music, food, and giveaways. In front of CSUEB Concord University Union, 4700 Ygnacio Valley Rd, 11am-2pm.
  • Moraga: Saint Mary’s Earth Day Festival – Enjoy over 20 booths, including an electric vehicle car show, the Global Gael food truck, yoga, music, art, and more. Celebrate the Earth and learn about environmental issues and solutions. St. Mary’s College, De La Salle Hall, 1928 St. Mary’s Road, 12:30pm-3pm.
  • Pittsburg ☀: Los Medanos College Earth Day Fair – An opportunity to learn about environmental organizations, their work, and how to live in an environmentally friendly way. The Sierra Club will be hosting a table to share information about the work they do and outings they sponsor. Los Medanos College Campus Quad, 2700 E Leland Rd, 10am-1pm.

Saturday, April 27

  • Orinda: Orinda Action Day – A day of community service by residents and friends. Volunteers check in at the Orinda Library Plaza. Orinda Library Plaza, 26 Orinda Way, 10am-12pm.

Sunday, April 28

  • Lafayette: Lafayette Earth Day Festival – Discover opportunities to make environmentally friendly choices at the festival. Several organizations will host informative and educational booths including the Girl Scouts, the Climate Reality Project, and Wheel Kids Bicycle Club. Lucia’s, a popular Berkeley pizzeria, will offer regular, vegan and gluten-free pizzas for purchase. Lafayette Library, 3491 Mt Diablo Blvd, 11am-2pm.
  • Orinda: Wagner Ranch Wildlife Festival – Enjoy free admission to the beautiful historic ranch and 18-acre nature preserve, rarely open to the public. Join a variety of activities for all ages: wildlife fun at the Frog Pond, animals to visit in the garden, tours of the meadows, and live music. You’re also welcome to bring a picnic lunch or visit one of four food trucks. Wagner Ranch Nature Area, 350 Camino Pablo, 11:30am-4:30pm.
  • Walnut Creek: Lindsay Wildlife Experience Eco Fest – Meet wild animals – like falcons and porcupines, check out an electric car showcase, learn about sustainable food choices, and more! Lindsay Wildlife Experience, 1931 First Ave, 10am-5pm.

Monday, April 22 – Saturday, April 27: Cal State East Bay Earth Week

  • Concord: Earth Week is free & open to the public, with events including talks, tree planting days, free lunch (bring your own utensils), a scavenger hunt & more. Check the schedule for times & locations.