Sibley Volcanic Regional Preserve
Oakland, Contra Costa County, CA
- Size
- 928 acres Source
- Managed by
- East Bay Regional Park District
About Sibley Volcanic Regional Preserve
An extinct volcano in the Oakland hills, one of the Park District's original parks. Source
East Bay residents have a volcano in their backyard at Sibley Volcanic Regional Preserve. Originally called Round Top Park, Sibley shares with Temescal and Tilden the distinction of being one of the East Bay Regional Park District's original parks. The preserve was later named in honor of Robert Sibley, who helped found the District and served for 10 years on its board of directors.
Facilities
- Camping
- Drinking Water
- Picnic Area
- Restrooms
Facility details: OpenStreetMap
Sibley Volcanic Regional Preserve at a glance
- PParking · 3: Sibley Volcanic Regional Preserve parking, Old Tunnel Road Staging Area
- WCRestrooms · 3: Pit toilet
- WDrinking water · 1
- Named trails · 8
Outline: CPAD. Points and trail lines: OpenStreetMap contributors. Not for navigation.
Trails
| Trail | Mapped length | Elevation | Surface & uses |
|---|---|---|---|
| Skyline Trail | 2.2 mi | 943 ft up & down977–1,482 ft | UnpavedHorsesNo bikesPaved |
| McCosker Loop Trail | 1.5 mi | ||
| Round Top Loop Trail | 1.1 mi | 342 ft up & down1,471–1,614 ft | UnpavedBikesHorsesNo bikes |
| Volcanic Trail | 1 mi | 249 ft up & down1,351–1,514 ft | UnpavedBikesHorses |
| Quarry Road | 0.7 mi | 333 ft up & down1,010–1,351 ft | PavedBikesHorses |
| Gudde Ridge Trail | 0.7 mi | ||
| Quarry Trail | 0.4 mi | 185 ft up & down1,270–1,461 ft | UnpavedBikesHorses |
| Pond Trail | 0.4 mi | 136 ft up & down1,151–1,290 ft | UnpavedBikesHorses |
| Pacific Pea Trail | 0.4 mi | ||
| Round Top Loop Trail (Bay Area Ridge Trail) | 0.2 mi | 23 ft up & down1,473–1,488 ft | UnpavedNo bikesHorses |
| Overlook Trail | 0.2 mi | 90 ft up & down1,397–1,492 ft | UnpavedNo bikes |
| Ninebark Trail | 0.2 mi |
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.
Getting to Sibley Volcanic Regional Preserve by bus
- Tunnel Road & Skyline Boulevard · Routes 677 · 900 ft from the park
- Skyline Boulevard & Broadway Terrace · Routes 677 · 1010 ft from the park
- Broadway Terrace & Skyline Boulevard · Routes 677 · 1020 ft from the park
Bus stops within about a quarter mile of Sibley Volcanic Regional Preserve, mapped in OpenStreetMap. Check the transit agency for schedules.
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
Map & directions
6800 Skyline Blvd., Oakland, CA 94611
Nearby parks
Straight-line distanceContinue exploring
Contra Costa County parks Parks in OaklandSources & verification
Last verified: Oct 15, 2026- California Protected Areas Database (CPAD) 2026aname, county, agency, access, acres
- East Bay Regional Park District dog rulesdogs
- East Bay Regional Park District park pageofficial_url, hours, address, description, fees
- OpenStreetMap facilities and trailsfacilities.camping, facilities.drinking-water, facilities.picnic-area, facilities.restrooms, trails
- U.S. Census Bureau place boundaries (nearest place)city
- OpenStreetMap: parking, restrooms, water, trailheads, trail lines, and bus stopsvisit
- Terrain Tiles elevation (USGS 3DEP), sampled every 20 m along OpenStreetMap trail linestrails.elevation
- Official park page (introduction excerpt)intro