Next Meetup

Pleasanton Ridge Hike
(This event sponsored by Sierra Singles) Moderate to strenuous hike up to Pleasanton Ridge, down the backside, and back up to the ridge again. We will enjoy sweeping views of the Livermore/San Ramon Valleys plus shady wooded walks. 8.1 miles and 1600 ft elevation gain (2B). It could be hot so bring 2 liters of water, a snack for a short pre-lunch stop and a lunch. Wear good hiking shoes as there are some steep uphill sections. Level: Strenuous Bring: Lunch, snack, 2 liters water, good hiking shoes Additional Directions: From 680 near Pleasanton take the Bernal exit and head west. Turn right at Foothill Rd. Proceed about half mile and turn left onto Old Foothill Road. You will probably want to use the north entrance to Old Foothill Rd. which is a hard left on the street after the south entrance. If you use the north entrance, the trailhead is on the right about mid-way between the north and south entrances. There is parking on the right side of the road and at the Adobe Park parking lot near the south entrance. You can get close with google maps using Old Foothill Road Pleasanton. Cancellation Policy: Excessive heat cancels (> 87F) in Pleasanton TO ALL SIERRA SINGLES PARTICIPANTS: We are a volunteer organization and depend upon your generosity with your time. Consider becoming a leader! To continue offering the frequency and variety of hikes that you find in our schedule, we need to recruit new hike leaders. It’s not hard to become a leader, and it’s fun and rewarding to lead. You’ll be able to share with others the hikes that you love most. If you think you may enjoy it, but aren’t sure, consider co-leading a hike with Albert, Seth, or any of our leaders. To learn how, contact Albert Chiu (albert-chiu at or Seth Feinberg (sethfeinberg at, or speak to any leader.

Castleridge Trailhead, Pleasanton Ridge Regional Park

3464 Old Foothill Rd · Pleasanton, ca


What we're about

The Sierra Club San Francisco Bay Chapter offers hikes and outdoor recreation for people of all ages. For a more complete listing of all Chapter outings and events see our calendar ( There are many more events on the calendar than it is possible to list on Meetup!

Outings are conducted by the San Francisco Bay Chapter's Activity Sections and Regional Groups. Activity Sections are organized around either an activity, such as hiking or backpacking, or a social theme, such as Sierra Singles. No matter the theme, our outings and activities are open to all. Everyone is welcome, including those who are not members of Sierra Club (unless, rarely, otherwise stated). For more information about the Chapter's activity sections, click here (

You can also join the Sierra Club, which is a good idea because it is the Sierra Club that makes all this possible. Join or renew today. ( If you'd like to lead hikes or other outings, you'll need to be a member of the Club.

We also advocate for policies that protect our natural environment, support environmental candidates for public office, and provide opportunities for people who want to develop leadership skills to give back to the community and help the environment. We serve Alameda, Contra Costa, Marin, and San Francisco Counties, California.

For additional information about our outings, including outing policies and rating codes (1A, 2B, etc.), please see Hike Difficulty Codes (

Before you attend any Sierra Club activity please familiarize yourself with our Outings Policies and Background Information ( Also, please note that dogs or other pets are permitted only on outings that are pre-advertised or otherwise identified as dog- or pet-permitted outings. (Service animals, as defined by the Americans with Disabilities Act, are not considered pets.)

Note: CST 2087766-40. Registration as a seller of travel does not constitute approval by the State of California

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