01
Closest sandy shoreline
Sandy Beach Park
Sacramento–San Joaquin Delta Near Rio Vista • Relaxed Delta Swim Beach With Camping • Closest Sandy Shoreline To Brentwood
A mellow riverfront beach with gentle water, grassy picnic spots, and easy day-trip access from Brentwood.
Set along the Sacramento River near Rio Vista, Sandy Beach Park is one of the quickest true sand-and-water escapes from Brentwood. Shallow entry, usually calm conditions, and a wide sandy stretch make it an easy choice for laid-back swims and sunbathing. Arrive early on hot weekends for better parking and to claim a picnic table in the shade.
02
Best inland swimming
Contra Loma Regional Park Swim Lagoon
Antioch Hills • Lakeside Recreation Area With Roped-Off Swim Beach • Best For Quick Dips Close To Home
An inland reservoir with a managed swim lagoon and small sandy beach that feels refreshingly close to Brentwood.
Just over the hill in Antioch, Contra Loma’s swim lagoon offers a designated sandy area, lifeguards in season, and calm water that suits kids and casual swimmers. Trails, picnic areas, and fishing spots round out the day if you want more than just a swim. Check seasonal hours and any water-quality advisories before you go, as access can vary by time of year.
03
Best bayfront option
Crown Memorial State Beach
Alameda Shoreline • Urban Bayfront Beach With Wide Promenade • Best For Picnics With Bay Views
A long, gently curving Bay beach with shallow water, steady breezes, and skyline views of San Francisco.
Crown Memorial State Beach in Alameda trades ocean surf for calmer Bay waters and a big-city backdrop. The broad sandy strand, grassy lawns, and bikeable shoreline path make it ideal for family picnics, kite flying, and wading on warm days. Parking is usually straightforward, but the beach can be windy, so bring layers along with your blanket.
04
Best all-around ocean day trip
Half Moon Bay State Beach
Half Moon Bay Coast • Classic Small-Town Oceanfront With Long Sandy Strand • Top Pick For Full-Day Ocean Trips
A wide Pacific beach with room to spread out, coastal trails, and a relaxed town just up the road for food and coffee.
Half Moon Bay State Beach is the go-to ocean destination for many East Bay residents willing to make a longer drive. The beach stretches for miles, offering space for walking, tide watching, and taking in big-sky coastal views, even on busier weekends. Pack layers and expect cool breezes and fog, especially in summer, but enjoy easy access to cafes and shops in town when you’re ready to warm up.
05
Most scenic coastal escape
Stinson Beach
Marin Coast Near Mount Tamalpais • Scenic Village Beach With Surf And Wide Sand • Best For Cool Foggy Summer Escapes
A famously beautiful Marin beach backed by hills, offering soft sand, surfable waves, and a laid-back coastal village feel.
Stinson Beach takes a little more commitment from Brentwood, but the payoff is a classic Northern California coastal scene. The drive over Mount Tamalpais is winding yet spectacular, and you arrive to a broad sandy shore with views that stretch up and down the Marin coast. Plan to spend the day, build in time for the curvy drive, and bring warm layers—fog and cool breezes are part of the charm here.