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Pleasanton Ridge Regional Park
View looking south along the ridge from one of the peaks
Pleasanton Ridge Regional ParkShow map of San Francisco Bay AreaPleasanton Ridge Regional ParkShow map of CaliforniaPleasanton Ridge Regional ParkShow map of the United States
Location	Pleasanton, California
Coordinates	37°36′55″N 121°53′04″W / 37.6154094°N 121.8845595°W / 37.6154094; -121.8845595
Area	5,271-acre (21.33 km)
Created	1988
Operated by	East Bay Regional Park District

Pleasanton Ridge Regional Park is a 5,271-acre (21.33 km) park in the East Bay Regional Park District overlooking Pleasanton, California and the Livermore Valley to the east.

History

Pleasanton Ridge Regional Park, located west of the I-680 freeway and the City of Pleasanton, California, became a reality in 1988, when the East Bay Regional Park District bought 1,700 acres (6.9 km) to start what would become its second-largest park. In 1980, a real estate developer had proposed building a golf course and a number of new homes atop Pleasanton Ridge. A large number of area residents opposed the proposal and defeated it in a referendum in 1983.

In 2012, the park district announced it had purchased 1,367 acres (5.53 km) from Robertson Ranch, east of Palomares Road, which it would add to Pleasanton Ridge Regional Park. The tract included the landmark Sunol Peak (elevation 2,163 feet (659 m). The price was reported as $6.2 million. The report stated that prior to the purchase, the regional park contained 7,500 acres (30 km) of land.

Tyler Ranch acquisition

The Tyler Ranch extends for about 3.5 miles (5.6 km) along Sunol Ridge. The north end of the ranch abutted the existing Pleasanton Ridge park at the end of Kilkare Road. It also has good access from Foothill Road. The acquisition was supported by the Priem Family Foundation, which is dedicated to preserving open space in the greater Bay Area.

The park was scheduled to grow by almost 1,500 acres (6.1 km) (sic) with the acquisition of the Tyler Ranch. EBRPD claimed that the Tyler Ranch acquisition marked the occasion when the district acquired 100,000 acres since it was formed in 1934. The Tyler Ranch Staging Area, located on the holdings of Tyler Ranch and Robertson Ranch, opened in December 2023 and offers additional walking, horseback riding, and cycling spaces on over 18 miles of trails across 2,800 acres.

Trails

Pleasanton Ridge Regional Park contains over 25 miles (40 km) of trails, most of which are dirt roads, except for the Woodland Trail, the Bay Leaf Trail, and a few sections of the North Ridge and Ridgeline trails. Park elevations range from 400 feet (120 m) at the main entrance to over 1,600 feet (490 m) at the highest point.

Adjacent to the park is the Augustin Bernal Park. The 237-acre park was donated to the city of Pleasanton by Walter S. Johnson in 1971.

Geology and geography

Pleasanton Ridge is the southeastern component of the East Bay Hills, which refers geologically to all of the ranges east of the Bay from the Hayward Fault in the west to the Calaveras Fault in the east. The United States Geological Survey (USGS) Geographic Names Information System, however, includes Pleasanton Ridge as part of the Diablo Range in its list of GPS coordinates for the latter.

Notes

1. The area actually acquired totalled 1,476 acres (5.97 km), bringing the size of the expanded park to 6,146 acres (24.87 km).
2. Walter S. Johnson was a philanthropist who financially supported the restoration of San Francisco's Palace of Fine Arts. Today, the City of Pleasanton owns and operates the Augustin Bernal Park.

References

1. Valley Sentinel News, Bev Lane, 1 November 2007
2. Cuff, Denis. "Park with a view: Pleasanton Ridge expands fast." East Bay Times. September 6, 2013. Updated July 20, 2016. Accessed August 17, 2017.
3. Austin, Michael. "Another Major Land Purchase on the Pleasanton Ridge by East Bay Regional Parks District." Pleasanton Patch. August 18, 2012. Accessed August 17, 2017.
4. Mackay, Ned. "Tyler Ranch to join district." East Bay Times. October 5, 2007. Updated August 15, 2016 Accessed August 16, 2017.
5. Valley Sentinel News, Bev Lane, 1 November 2007
6. Baciagalupi, Bob. "The 100,000th Acre for East Bay Parks." Bay Nature. January 12, 2010. Accessed August 16, 2017
7. "Grand Opening of Tyler Ranch Staging Area at Pleasanton Ridge Regional Park in Sunol | East Bay Parks". www.ebparks.org. Retrieved 2024-10-15.
8. "Pleasanton Ridge Regional Park (and Augustin Bernal Community Park). Trailstompers. Accessed September 11, 2017.
9. "Augustin Bernal Community Park Trail Map" (PDF). City of Pleasanton. October 3, 2024. Retrieved October 3, 2024.
10. "Augustin Bernal Park". City of Pleasanton. Archived from the original on 2011-07-19. Retrieved 2011-02-06.
11. "Augustin Bernal Community Park Trail Map." City of Pleasanton. Accessed October 15, 2024
12. "Pleasanton Ridge". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
13. R. C. Crane (1995). "Geology of Mount Diablo Region and East Bay Hills". In E. M. Sangines; D. W. Andersen; A. B. Buising (eds.). Recent Geologic Studies in the San Francisco Bay Area. Vol. 76. Pacific Section, Society for Sedimentary Geology (S.E.P.M.). pp. 87–114. Retrieved July 3, 2024.
14. "Diablo Range". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.

External links

• East Bay Regional Parks: official Pleasanton Ridge Regional Park website

• East Bay Regional Park District
• Parks in Alameda County, California
• Geography of Pleasanton, California
• Amador Valley