Peninsula Open Space Trust (POST)

POST protects open space on the San Francisco Peninsula and in the South Bay for the benefit of all. Since 1977, we've worked hard to permanently protect lands for hiking and recreation trails, wildlife habitats, redwood trees and local farms—all of which make our region extraordinary.

We want people to get out and enjoy these amazing local landscapes, so we host all kinds of community events—and we'd love for you to join us! See our full list of hikes, film screenings, lectures and more.

We're an accredited land trust and a 501(c)(3) nonprofit organization, which means we're funded by the generous support of private individuals and foundations.

POST-protected properties are all around: Windy Hill, Mindego Hill and several others off of Skyline Boulevard; Tunitas Creek Beach in Half Moon Bay; Bair Island in Redwood City; Whaler's Cove by Pigeon Point in Pescadero; parts of Coyote Valley in San Jose; and many more. 

Upcoming (11)

CANCELED- Afternoon Hike at Mindego Hill primary image

CANCELED- Afternoon Hike at Mindego Hill

Tomorrow • 3:00 PM

Free

Bair Island Walking Tour primary image

Bair Island Walking Tour

Fri, Apr 5 • 10:00 AM

Free

Bair Island Volunteer Workday primary image

Bair Island Volunteer Workday

Sat, Apr 6 • 9:00 AM

Free

Afternoon Hike at Mindego Hill primary image

Afternoon Hike at Mindego Hill

Sat, Apr 13 • 2:00 PM

Free

Volunteer Restoration Workday at Redwood Creek primary image

Volunteer Restoration Workday at Redwood Creek

Sun, Apr 14 • 9:30 AM

Free

Volunteer Outside for Earth Day at Pearson-Arastradero Preserve primary image

Volunteer Outside for Earth Day at Pearson-Arastradero Preserve

Sat, Apr 20 • 9:00 AM

Free

Morning Hike from Skyline Ridge to Russian Ridge primary image

Morning Hike from Skyline Ridge to Russian Ridge

Sat, Apr 20 • 9:00 AM

Free

Queers of a Feather (LGBTQ+ Birding Event) primary image

Queers of a Feather (LGBTQ+ Birding Event)

Sat, Apr 27 • 10:00 AM

Free

Bair Island Walking Tour primary image

Bair Island Walking Tour

Fri, May 3 • 10:00 AM

Free

Womxn in the Weeds - Volunteer Workday at Pearson-Arastradero Preserve primary image

Womxn in the Weeds - Volunteer Workday at Pearson-Arastradero Preserve

Sat, May 11 • 9:00 AM

Free

Hike at Windy Hill primary image

Hike at Windy Hill

Sun, May 19 • 9:00 AM

Free

CANCELED- Afternoon Hike at Mindego Hill primary image

CANCELED- Afternoon Hike at Mindego Hill

Tomorrow • 3:00 PM

Free

Bair Island Walking Tour primary image

Bair Island Walking Tour

Fri, Apr 5 • 10:00 AM

Free

Bair Island Volunteer Workday primary image

Bair Island Volunteer Workday

Sat, Apr 6 • 9:00 AM

Free

Afternoon Hike at Mindego Hill primary image

Afternoon Hike at Mindego Hill

Sat, Apr 13 • 2:00 PM

Free

Volunteer Restoration Workday at Redwood Creek primary image

Volunteer Restoration Workday at Redwood Creek

Sun, Apr 14 • 9:30 AM

Free

Volunteer Outside for Earth Day at Pearson-Arastradero Preserve primary image

Volunteer Outside for Earth Day at Pearson-Arastradero Preserve

Sat, Apr 20 • 9:00 AM

Free

Morning Hike from Skyline Ridge to Russian Ridge primary image

Morning Hike from Skyline Ridge to Russian Ridge

Sat, Apr 20 • 9:00 AM

Free

Queers of a Feather (LGBTQ+ Birding Event) primary image

Queers of a Feather (LGBTQ+ Birding Event)

Sat, Apr 27 • 10:00 AM

Free

Bair Island Walking Tour primary image

Bair Island Walking Tour

Fri, May 3 • 10:00 AM

Free

Womxn in the Weeds - Volunteer Workday at Pearson-Arastradero Preserve primary image

Womxn in the Weeds - Volunteer Workday at Pearson-Arastradero Preserve

Sat, May 11 • 9:00 AM

Free

Hike at Windy Hill primary image

Hike at Windy Hill

Sun, May 19 • 9:00 AM

Free

Past (357)

Coastal Walk at Pillar Point Bluff primary image

Coastal Walk at Pillar Point Bluff

Sun, Mar 24 • 10:00 AM

Free

Womxn in the Weeds - Volunteer Workday at Stulsaft Park primary image

Womxn in the Weeds - Volunteer Workday at Stulsaft Park

Sun, Mar 24 • 9:00 AM

Free

CANCELED-Morning Hike at Skyline Ridge Open Space Preserve primary image

CANCELED-Morning Hike at Skyline Ridge Open Space Preserve

Sat, Mar 23 • 9:00 AM

Free

Morning Hike at Rancho Cañada del Oro primary image

Morning Hike at Rancho Cañada del Oro

Sun, Mar 17 • 9:30 AM

Free

Bair Island Volunteer Workday primary image

Bair Island Volunteer Workday

Sat, Mar 9 • 9:00 AM

Free

Hike at Calero County Park primary image

Hike at Calero County Park

Fri, Mar 8 • 9:00 AM

Free

North Ridge Trail Hike at Purisima Creek Redwoods primary image

North Ridge Trail Hike at Purisima Creek Redwoods

Wed, Mar 6 • 9:00 AM

Free

Volunteer Restoration Workday at Redwood Creek primary image

Volunteer Restoration Workday at Redwood Creek

Sun, Mar 3 • 9:30 AM

Free

2024 Wild & Scenic Film Festival  Virtual Only primary image

2024 Wild & Scenic Film Festival Virtual Only

Sat, Mar 2 • 6:00 PM

Free

Afternoon Hike at Mindego Hill primary image

Afternoon Hike at Mindego Hill

Sun, Feb 25 • 2:00 PM

Free

CANCELED- Bair Island Walking Tour primary image

CANCELED- Bair Island Walking Tour

Sat, Feb 17 • 2:30 PM

Free

Coastal Walk at Cowell-Purisima Trail primary image

Coastal Walk at Cowell-Purisima Trail

Fri, Feb 16 • 10:00 AM

Free

Coastal Walk at Pillar Point Bluff primary image

Coastal Walk at Pillar Point Bluff

Sun, Mar 24 • 10:00 AM

Free

Womxn in the Weeds - Volunteer Workday at Stulsaft Park primary image

Womxn in the Weeds - Volunteer Workday at Stulsaft Park

Sun, Mar 24 • 9:00 AM

Free

CANCELED-Morning Hike at Skyline Ridge Open Space Preserve primary image

CANCELED-Morning Hike at Skyline Ridge Open Space Preserve

Sat, Mar 23 • 9:00 AM

Free

Morning Hike at Rancho Cañada del Oro primary image

Morning Hike at Rancho Cañada del Oro

Sun, Mar 17 • 9:30 AM

Free

Bair Island Volunteer Workday primary image

Bair Island Volunteer Workday

Sat, Mar 9 • 9:00 AM

Free

Hike at Calero County Park primary image

Hike at Calero County Park

Fri, Mar 8 • 9:00 AM

Free

North Ridge Trail Hike at Purisima Creek Redwoods primary image

North Ridge Trail Hike at Purisima Creek Redwoods

Wed, Mar 6 • 9:00 AM

Free

Volunteer Restoration Workday at Redwood Creek primary image

Volunteer Restoration Workday at Redwood Creek

Sun, Mar 3 • 9:30 AM

Free

2024 Wild & Scenic Film Festival  Virtual Only primary image

2024 Wild & Scenic Film Festival Virtual Only

Sat, Mar 2 • 6:00 PM

Free

Afternoon Hike at Mindego Hill primary image

Afternoon Hike at Mindego Hill

Sun, Feb 25 • 2:00 PM

Free

CANCELED- Bair Island Walking Tour primary image

CANCELED- Bair Island Walking Tour

Sat, Feb 17 • 2:30 PM

Free

Coastal Walk at Cowell-Purisima Trail primary image

Coastal Walk at Cowell-Purisima Trail

Fri, Feb 16 • 10:00 AM

Free

POST protects open space on the San Francisco Peninsula and in the South Bay for the benefit of all. Since 1977, we've worked hard to permanently protect lands for hiking and recreation trails, wildlife habitats, redwood trees and local farms—all of which make our region extraordinary.

We want people to get out and enjoy these amazing local landscapes, so we host all kinds of community events—and we'd love for you to join us! See our full list of hikes, film screenings, lectures and more.

We're an accredited land trust and a 501(c)(3) nonprofit organization, which means we're funded by the generous support of private individuals and foundations.

POST-protected properties are all around: Windy Hill, Mindego Hill and several others off of Skyline Boulevard; Tunitas Creek Beach in Half Moon Bay; Bair Island in Redwood City; Whaler's Cove by Pigeon Point in Pescadero; parts of Coyote Valley in San Jose; and many more. 

Events

CANCELED- Afternoon Hike at Mindego Hill primary image

CANCELED- Afternoon Hike at Mindego Hill

Tomorrow • 3:00 PM

Free

Bair Island Walking Tour primary image

Bair Island Walking Tour

Fri, Apr 5 • 10:00 AM

Free

Bair Island Volunteer Workday primary image

Bair Island Volunteer Workday

Sat, Apr 6 • 9:00 AM

Free

Afternoon Hike at Mindego Hill primary image

Afternoon Hike at Mindego Hill

Sat, Apr 13 • 2:00 PM

Free

Volunteer Restoration Workday at Redwood Creek primary image

Volunteer Restoration Workday at Redwood Creek

Sun, Apr 14 • 9:30 AM

Free

Volunteer Outside for Earth Day at Pearson-Arastradero Preserve primary image

Volunteer Outside for Earth Day at Pearson-Arastradero Preserve

Sat, Apr 20 • 9:00 AM

Free

Morning Hike from Skyline Ridge to Russian Ridge primary image

Morning Hike from Skyline Ridge to Russian Ridge

Sat, Apr 20 • 9:00 AM

Free

Queers of a Feather (LGBTQ+ Birding Event) primary image

Queers of a Feather (LGBTQ+ Birding Event)

Sat, Apr 27 • 10:00 AM

Free

Bair Island Walking Tour primary image

Bair Island Walking Tour

Fri, May 3 • 10:00 AM

Free

Womxn in the Weeds - Volunteer Workday at Pearson-Arastradero Preserve primary image

Womxn in the Weeds - Volunteer Workday at Pearson-Arastradero Preserve

Sat, May 11 • 9:00 AM

Free

Hike at Windy Hill primary image

Hike at Windy Hill

Sun, May 19 • 9:00 AM

Free

CANCELED- Afternoon Hike at Mindego Hill primary image

CANCELED- Afternoon Hike at Mindego Hill

Tomorrow • 3:00 PM

Free

Bair Island Walking Tour primary image

Bair Island Walking Tour

Fri, Apr 5 • 10:00 AM

Free

Bair Island Volunteer Workday primary image

Bair Island Volunteer Workday

Sat, Apr 6 • 9:00 AM

Free

Afternoon Hike at Mindego Hill primary image

Afternoon Hike at Mindego Hill

Sat, Apr 13 • 2:00 PM

Free

Volunteer Restoration Workday at Redwood Creek primary image

Volunteer Restoration Workday at Redwood Creek

Sun, Apr 14 • 9:30 AM

Free

Volunteer Outside for Earth Day at Pearson-Arastradero Preserve primary image

Volunteer Outside for Earth Day at Pearson-Arastradero Preserve

Sat, Apr 20 • 9:00 AM

Free

Morning Hike from Skyline Ridge to Russian Ridge primary image

Morning Hike from Skyline Ridge to Russian Ridge

Sat, Apr 20 • 9:00 AM

Free

Queers of a Feather (LGBTQ+ Birding Event) primary image

Queers of a Feather (LGBTQ+ Birding Event)

Sat, Apr 27 • 10:00 AM

Free

Bair Island Walking Tour primary image

Bair Island Walking Tour

Fri, May 3 • 10:00 AM

Free

Womxn in the Weeds - Volunteer Workday at Pearson-Arastradero Preserve primary image

Womxn in the Weeds - Volunteer Workday at Pearson-Arastradero Preserve

Sat, May 11 • 9:00 AM

Free

Hike at Windy Hill primary image

Hike at Windy Hill

Sun, May 19 • 9:00 AM

Free

Coastal Walk at Pillar Point Bluff primary image

Coastal Walk at Pillar Point Bluff

Sun, Mar 24 • 10:00 AM

Free

Womxn in the Weeds - Volunteer Workday at Stulsaft Park primary image

Womxn in the Weeds - Volunteer Workday at Stulsaft Park

Sun, Mar 24 • 9:00 AM

Free

CANCELED-Morning Hike at Skyline Ridge Open Space Preserve primary image

CANCELED-Morning Hike at Skyline Ridge Open Space Preserve

Sat, Mar 23 • 9:00 AM

Free

Morning Hike at Rancho Cañada del Oro primary image

Morning Hike at Rancho Cañada del Oro

Sun, Mar 17 • 9:30 AM

Free

Bair Island Volunteer Workday primary image

Bair Island Volunteer Workday

Sat, Mar 9 • 9:00 AM

Free

Hike at Calero County Park primary image

Hike at Calero County Park

Fri, Mar 8 • 9:00 AM

Free

North Ridge Trail Hike at Purisima Creek Redwoods primary image

North Ridge Trail Hike at Purisima Creek Redwoods

Wed, Mar 6 • 9:00 AM

Free

Volunteer Restoration Workday at Redwood Creek primary image

Volunteer Restoration Workday at Redwood Creek

Sun, Mar 3 • 9:30 AM

Free

2024 Wild & Scenic Film Festival  Virtual Only primary image

2024 Wild & Scenic Film Festival Virtual Only

Sat, Mar 2 • 6:00 PM

Free

Afternoon Hike at Mindego Hill primary image

Afternoon Hike at Mindego Hill

Sun, Feb 25 • 2:00 PM

Free

CANCELED- Bair Island Walking Tour primary image

CANCELED- Bair Island Walking Tour

Sat, Feb 17 • 2:30 PM

Free

Coastal Walk at Cowell-Purisima Trail primary image

Coastal Walk at Cowell-Purisima Trail

Fri, Feb 16 • 10:00 AM

Free

Coastal Walk at Pillar Point Bluff primary image

Coastal Walk at Pillar Point Bluff

Sun, Mar 24 • 10:00 AM

Free

Womxn in the Weeds - Volunteer Workday at Stulsaft Park primary image

Womxn in the Weeds - Volunteer Workday at Stulsaft Park

Sun, Mar 24 • 9:00 AM

Free

CANCELED-Morning Hike at Skyline Ridge Open Space Preserve primary image

CANCELED-Morning Hike at Skyline Ridge Open Space Preserve

Sat, Mar 23 • 9:00 AM

Free

Morning Hike at Rancho Cañada del Oro primary image

Morning Hike at Rancho Cañada del Oro

Sun, Mar 17 • 9:30 AM

Free

Bair Island Volunteer Workday primary image

Bair Island Volunteer Workday

Sat, Mar 9 • 9:00 AM

Free

Hike at Calero County Park primary image

Hike at Calero County Park

Fri, Mar 8 • 9:00 AM

Free

North Ridge Trail Hike at Purisima Creek Redwoods primary image

North Ridge Trail Hike at Purisima Creek Redwoods

Wed, Mar 6 • 9:00 AM

Free

Volunteer Restoration Workday at Redwood Creek primary image

Volunteer Restoration Workday at Redwood Creek

Sun, Mar 3 • 9:30 AM

Free

2024 Wild & Scenic Film Festival  Virtual Only primary image

2024 Wild & Scenic Film Festival Virtual Only

Sat, Mar 2 • 6:00 PM

Free

Afternoon Hike at Mindego Hill primary image

Afternoon Hike at Mindego Hill

Sun, Feb 25 • 2:00 PM

Free

CANCELED- Bair Island Walking Tour primary image

CANCELED- Bair Island Walking Tour

Sat, Feb 17 • 2:30 PM

Free

Coastal Walk at Cowell-Purisima Trail primary image

Coastal Walk at Cowell-Purisima Trail

Fri, Feb 16 • 10:00 AM

Free