Big Break Regional Shoreline

Oakley, Contra Costa County, CA

ParkingNo parking fee
Source
DogsLeash in developed areas
Source
Hours5 a.m. to 10 p.m.
Source
Size
1,658 acres Source
Swimming
Not allowed Source
Managed by
East Bay Regional Park District

About Big Break Regional Shoreline

A Delta shoreline park in Oakley with a visitor center, fishing, and paddling access. Source

Big Break Regional Shoreline is a part of the great 1150-square-mile Sacramento-San Joaquin River Delta. The water flowing past Big Break through the Sacramento and San Joaquin-the State's two greatest rivers-drains half of California and creates the largest estuarine environment on the Pacific coast. This area is also referred to as the "Inland Coast."
From the official park page · checked Oct 15, 2026

Big Break Regional Shoreline at a glance

PP
  • PParking · 2
  • Named trails · 2

Outline: CPAD. Points and trail lines: OpenStreetMap contributors. Not for navigation.

Trails

TrailMapped lengthElevationSurface & uses
Big Break Trail0.5 mi8 ft up & down9–13 ftPavedBikesWheelchair
Levee Top Trail0.3 mi3 ft up & down8–10 ft

Trail names and mapped lengths come from OpenStreetMap; lengths count only the part inside the park boundary. Up-and-down totals (climbing plus descent, one way) and elevation ranges are estimates from USGS 3DEP elevation (about 15 m grid) sampled along the mapped line. Use the official guide map for the route and current closures.

Rules & reservations

Official park page
  • Dogs

    Dogs must be leashed in parking lots, picnic areas, lawns, and other developed areas, and may be off leash under control in undeveloped open space (district rules). Source

Gate hours change through the year; check the posted schedule. Visitor center: Wednesday–Sunday, 10 a.m. to 4 p.m.

Map & directions

69 Big Break Road, Oakley, CA 94561

1Location overview · map data © OpenStreetMap

38.016052, -121.707450Get directions

Nearby parks

Straight-line distance
Antioch/Oakley Regional ShorelineOakley · 2.4 miContra Loma Regional ParkAntioch · 7.1 mi · Boat Launch, Picnic AreaBlack Diamond Mines Regional PreserveAntioch · 9.0 mi · Camping, Drinking WaterRound Valley Regional PreserveBrentwood · 11.3 mi · Camping, Picnic AreaBay Point Regional ShorelineBay Point · 14.2 mi

Continue exploring

Contra Costa County parks

Sources & verification

Last verified: Oct 15, 2026
  1. California Protected Areas Database (CPAD) 2026aname, county, agency, access, acres
  2. East Bay Regional Park District dog rulesdogs
  3. East Bay Regional Park District park pageofficial_url, hours, address, description, fees, swimming
  4. OpenStreetMap facilities and trailstrails
  5. U.S. Census Bureau place boundaries (nearest place)city
  6. OpenStreetMap: parking, restrooms, water, trailheads, trail lines, and bus stopsvisit
  7. Terrain Tiles elevation (USGS 3DEP), sampled every 20 m along OpenStreetMap trail linestrails.elevation
  8. Official park page (introduction excerpt)intro
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