01
Best overall pick
Benicia State Recreation Area
West Benicia Shoreline • Scenic Bayside Shoreline • Best Mix Of Views And Breathing Room
Winding trails lead to driftwood-lined pocket beaches with wide views back toward Port Costa and the Carquinez Strait.
This is the closest place that really feels like a beach day, with small sandy and pebbly coves tucked below bluffs and a relaxed, uncrowded vibe. It’s an easy spot for a picnic, a stroller-friendly walk, or a sunset watch over the strait, though afternoon winds can pick up. Parking fills on sunny weekends, so arrive earlier if you want a quieter stretch of shoreline.
02
Best in-town hangout
First Street Green & Beach
Benicia Waterfront • Compact Town Beach And Lawn • Best For Pairing With Cafes And Shops
A small sandy strip beside a grassy lawn at the end of Benicia’s main street, with sailboats and refineries sharing the skyline.
If you want sand plus a strollable main street, this little beach at the foot of First Street is the move. Kids dig in the sand while adults relax on the lawn or benches, and you’re steps from coffee, ice cream, and casual restaurants. It’s more about the bayfront atmosphere than full-on swimming, but the convenience and walkable setting make it a reliable go-to from Port Costa.
03
Best for families
Martinez Shoreline Park Beach
Martinez Waterfront • Family-Friendly Bayside Strand • Best For Playgrounds And Easy Walking
A shallow, gently sloping stretch of sand and shoreline beside picnic areas, playgrounds, and paths along the Martinez marina.
Martinez Shoreline Park offers a mellow bit of beach that blends right into a larger waterfront park, so kids can bounce between the sand, play structures, and bikeable paths. It’s a popular choice for casual birthday parties and multi-generational meetups, with plenty of tables and open lawn. Expect more of a breezy bayside park feel than a classic ocean beach, and keep an eye on tides and mudflats when the water is low.
04
Best sheltered cove
Keller Beach at Miller/Knox Regional Shoreline
Point Richmond • Sheltered Cove With Neighborhood Feel • Best For Calm Water And Bridge Views
A tucked-away sandy cove with mellow waves, backed by bluffs and looking out toward the Richmond–San Rafael Bridge.
Keller Beach feels surprisingly intimate for being right on San Francisco Bay, with a compact stretch of sand that’s often calm enough for wading on warm days. The surrounding Miller/Knox park adds ponds, lawns, and a hilltop with sweeping views if you want to turn a beach stop into a longer outing. Parking is limited and the cove can feel snug at peak times, but on weekday afternoons it has a sleepy, locals-only atmosphere that’s worth the drive from Port Costa.
05
Most dramatic setting
Rodeo Beach
Marin Headlands • Wild Ocean-Facing Beach • Best For Rugged Coastal Scenery
A broad, pebbly Pacific beach framed by cliffs and headlands, better for walking and wave-watching than casual swims.
Rodeo Beach is the day-trip upgrade when you’re ready to swap the strait for open ocean, with crashing surf, sea cliffs, and trails climbing right from the parking lot. It’s a favorite for photographers, hikers, and surfers, and on clear days you’ll get classic Marin Headlands vistas in every direction. The water is cold and currents can be strong, so most visitors stick to the shore, but the drama of the setting more than earns the longer drive from Port Costa.