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  • Bioblitz Your Backyard
    City Nature Challenge offers way to stay connected while apart
    Learn More
    Photo: Lieven Leroy
  • Marin Updates Park Access Guidelines
    County extends guidance against driving to parks
    Read more
    Photo: Monica Stafford
  • What happened to our trout?
    Teacher records 'Trout in the Classroom' release
    Watch The Video
    Photo: Paul Myers
  • Bats Are Bellwethers
    One Tam partners are studying
    what bats can teach us about One Tam's health
    More on our Bat Surveys
    Photo by Alison Taggart-Barone
  • Bees Bring
    Tam Together
    This 40,000 specimen study
    will reveal a lot about
    the health of our mountain
    Read More!
    Photo by Will Elder, NPS
  • Mt. Tam needs you!
    There are ways for everyone to care for the mountain
    Find yours here!
    Volunteer
    Photo by Paul Myers
  • Support One Tam
    to care for Mt. Tam
    Join One Tam today
    for a healthy Mt. Tam tomorrow
    Join us
    Photo by Lieven Leroy
Explore
Explore

Learn about Mt. Tam and get trail tips

Support
Support

Join One Tam to support our work and your mountain

Volunteer
Volunteer

Get involved in habitat restoration, commuity science, and more!

Events
Events

See all One Tam partner events

One Mountain, One Team

With its sweeping views, miles of trails, and ancient forests, Mt. Tam is a beloved local treasure. But the mountain also faces many challenges such as invasive weeds, forest diseases,
and the effects of climate change. 

The One Tam partnership mobilizes the resources of the National Park Service, California State Parks, The Marin Municipal Water District, Marin County Parks and Golden Gate National Parks Conservancy to ensure a vibrant future for Mt. Tamalpais. 

Join Us!

California State Parks
Marin County Parks
Golden Gate National Parks Conservancy
Marin Municipal Water District
National Park Service

Upcoming Events

 
CANCELED - Ring Mountain Coffee Stop
Source: Marin County Parks
Saturday, April 11, 2020, 9 – 11am
 
CANCELED - Senior Stroll at Bahia
Source: Marin County Parks
Monday, April 13, 2020, 10 – 11:30am
 
CANCELED - Blossoms and Birds
Source: Marin County Parks
Wednesday, April 15, 2020, 10am – 2pm
 
CANCELED: Earth Day at Hal Brown Park - Hosted by Marin County Parks and One Tam
Source: One Tam Calendar
  This event is canceled.  The creation of Earth Day on April 22, 1970 marked what many consider to be the birth of the
 
CANCELED - Coffee with a Ranger: Mission Pass
Source: Marin County Parks
Saturday, April 18, 2020, 9:30 – 11:30am
 
CANCELED - Softball Spring Training
Source: Marin County Parks
Saturday, April 18, 2020, 11am – 2pm
 
CANCELED - Spring Flowers
Source: Marin County Parks
Sunday, April 19, 2020, 10am – 2pm
 
CANCELED - History of Paradise Park
Source: Marin County Parks
Sunday, April 19, 2020, 10am – 12pm
 
CANCELED - Family Movie Night
Source: Marin County Parks
Saturday, April 18, 2020, 6pm
 
CANCELLED - "Barn Owls" Hike with docent Franklin Young
Source: Mt Tamalpais State Park
Sunday, 4/19 at 9:30 AM from Dias Ridge trailhead. 
 
CANCELED - Birdsong
Source: Marin County Parks
Sunday, April 26, 2020, 9am – 1pm
 
CANCELED - Wildflowers at Chimney Rock
Source: Marin County Parks
Tuesday, April 28, 2020, 10am – 2pm
 
"Matt Davis and Mt Tam History" hike with docent Karen Ulring
Source: Mt Tamalpais State Park
On Saturday 5/2/2020 at 9:30 AM from Pantoll Parking Lot trailhead, "Matt Davis and Mt Tam History" fitness hi
 
CANCELED - Spring at San Geronimo Ridge
Source: Marin County Parks
Sunday, May 3, 2020, 9am – 2pm
 
CANCELED - Learn to Ride
Source: Marin County Parks
Sunday, May 3, 2020, 9 – 11am
 
Flowers and Plants of Mt Tam hike with docent Lizzy Silverstein
Source: Mt Tamalpais State Park
On Sunday 5/3/2020 at 9:30 AM from Dias Ridge trailhead, "Flowers & Plants of Tam" Interpretive hike with
 
Rangeland Birds
Source: Marin County Parks
Mount Burdell Preserve. Meet at the gate on San Carlos Way in Novato.
Monday, May 4, 2020, 8 – 11am
 
Senior Stroll on Escalon Fire Road
Source: Marin County Parks
Camino Alto Preserve. Meet at the trailhead on Escalon Fire Road in Mill Valley.
 
Mother's Day Art in the Park
Source: Marin County Parks
McNears Beach Park. Meet at the South Shore picnic area in McNears Beach Park in San Rafael (201 Cantera Way).
 
"Strenght and Balance" hike with docent Maria de La Fuente
Source: Mt Tamalpais State Park
On Saturday 5/9/2020 at 9:30 AM from Bootjack Parking Lot trailhead, "Strength and Balance" hike with docent M
 
"Walking in Nature" hike with docent Rosalind Gottfried
Source: Mt Tamalpais State Park
On Sunday 5/10/2020 at 9:30 AM from Matt Davis trailhead, "Walking in Nature" hike with docent Rosalind
 
"Mindfulness in Nature" Hike with Alexandra Jurasin
Source: Mt Tamalpais State Park
On Wednesday 5/13/2020 at 5:00 PM from Pantoll Parking Lot trailhead,  "Mindfulness in Nature" Interpretive hi
 
Habitat Restoration at Creekside Marsh - Hosted by Marin County Parks and One Tam
Source: One Tam Calendar
Come join Marin County Parks and One Tam in this community-based effort to improve habitat while preparing for sea leve
 
"Trails of Creativity" hike with docent Caryn Lowe
Source: Mt Tamalpais State Park
On Saturday 5/16/2020 at 9:30 AM from Pantoll Parking Lot trailhead. "Walking Mt.
 
"Unwinding" fitness hike with docent Sue Karp
Source: Mt Tamalpais State Park
On Wednesday 5/20/2020 at 5:00 PM from Mt Home trailhead, "Unwinding"  fitness hike with docent Sue Karp. 
 
"The Mighty Redwoods" hike with docent Karen Ulring
Source: Mt Tamalpais State Park
On Sunday 5/31/2020 at 9:30 AM from Mt Home trailhead, "The Mighty Redwoods" Fitness hike with docent Karen Ul
 
"Walking in Nature" hike with docent Rosalind Gottfried
Source: Mt Tamalpais State Park
On Saturday 6/6/2020 at 9:30 AM from Matt Davis trailhead, "Walking in Nature" hike with docent Rosalin
 
Discover the Coast Redwoods hike with docent Eileen Bai
Source: Mt Tamalpais State Park
On Sunday 6/7/2020 at 9:30 AM from Pantoll Parking Lot trailhead, "Discover the Coast Redwoods" Interpretive h
 
"Trails of Creativity" hike with docent Caryn Lowe
Source: Mt Tamalpais State Park
On Saturday 6/13/2020 at 9:30 AM from Pantoll Parking Lot trailhead. "Walking Mt.
 
Steep Ravine Wonders hike with docent Sue Karp
Source: Mt Tamalpais State Park
On Wednesday 6/17/2020 at 5:00 PM from Pantoll Parking Lot trailhead, "Steep Ravine Wonders" Fitness hike with
 
"Circle the Upper Mountain" hike with docent Robert Freinkel
Source: Mt Tamalpais State Park
On Sunday 6/21/2020 at 9:30 AM from Rock Spring trailhead.
 
"A Midweek Hiking Delight!" with docent Robert Feist
Source: Mt Tamalpais State Park
On Wednesday 6/24/2020 at 5:00 PM from Bootjack Parking Lot trailhead.
 
"Mindfulness in Nature" Hike with docent Alexandra Jurasin
Source: Mt Tamalpais State Park
On Wednesday 7/1/2020 at 5:00 PM from Pantoll Parking Lot trailhead, "Mindfullness in Nature" Interpretive hik
 
"Walking in Nature" hike with docent Rosalind Gottfried
Source: Mt Tamalpais State Park
On Sunday 7/5/2020 at 9:30 AM from Matt Davis trailhead, "Walking in Nature" hike with docent Rosalind
 
"Historic Sites" hike with docent Sue Karp
Source: Mt Tamalpais State Park
On Wednesday 7/8/2020 at 5:00 PM from Pantoll Parking Lot trailhead, "Historic Sites" hike with docent Sue Karp.
 
"Hidden Treasures" hike with docent Brian Muir
Source: Mt Tamalpais State Park
On Saturday 7/11/2020 at 9:30 AM from Pantoll Parking Lot trailhead,  "Hidden Treasures of Mt Tamalpais" Inter
 
"Trails of Creativity" hike with docent Caryn Lowe
Source: Mt Tamalpais State Park
On 7/18/2020 at 9:30 AM from Pantoll Parking Lot trailhead. "Walking Mt.
 
Exploring the Mountain hike with docent Lizzy Silverstein
Source: Mt Tamalpais State Park
On Sunday 7/19/2020 at 9:30 AM from Matt Davis (near Stinson Beach) trailhead, "Exploring the Mountain" Fitnes
 
"Ocean View" hike with docent Sue Karp
Source: Mt Tamalpais State Park
On Wednesday 7/22/2020 at 5:00 PM from Bootjack Parking Lot trailhead, "Ocean View" hike with docent Sue Karp.
 
The CCC Heritage Hike with docent Franklin Young
Source: Mt Tamalpais State Park
On Saturday 7/25/2020 at 9:30 AM from Bootjack Parking Lot trailhead, "The CCC Heritage" hike with docent Fran
 
"Ferns and Trail Names" hike with docent Karen Ulring
Source: Mt Tamalpais State Park
On Sunday 7/26/2020 at 9:30 AM from Rock Spring trailhead, "Ferns and Trail Names" Fitness hike with docent Ka
 
"Beautiful View from Mt Theatre Awaits" hike with docent Robert Feist
Source: Mt Tamalpais State Park
On Wednesday 7/29/2020 at 5:00 PM from Pantoll Parking Lot trailhead.
 
"West Peak/Potrero" Hike with docent Robert Freinkel
Source: Mt Tamalpais State Park
On Sunday 8/2/2020 at 9:30 AM from Rock Spring trailhead, "West Peak/Potrero" hike with docent Robert Freinkel
 
"Into the Woods" hike with docent Sue Karp
Source: Mt Tamalpais State Park
On Wednesday 8/5/2020 at 5:00 PM from Mt Home trailhead, "Into the Woods" hike with docent Sue Karp. 
 
"Trails of Creativity" hike with docent Caryn Lowe
Source: Mt Tamalpais State Park
On Saturday 8/9/2020 at 9:30 AM from Pantoll Parking Lot trailhead. "Walking Mt.
 
Majestic Redwoods hike with docent Franklin Young
Source: Mt Tamalpais State Park
On Wednesday 8/19/2020 at 5:00 PM from Mt Home trailhead,  "Majestic Redwoods" Fitness hike with docent Franklin Young. 
 
Mt Tam's Southern Aspect Hike with docent Robert Feist
Source: Mt Tamalpais State Park
On Wednsday 8/26/2020 at 5:00 PM from Mt Home trailhead, "A Look at Mt Tam State Park's Southern Aspect" Fitne

All Events

Featured Work

Bothin Marsh
With climate change and sea level rise, flooding is increasing in frequency and duration throughout Bothin Marsh - this project is creating a shared community vision for its future.
Path beside the base of an enormous redwood tree
Roy’s Redwoods
Long loved by the San Geronimo Valley community, Roy’s Redwoods Open Space Preserve offers visitors an immersive experience in an old-growth redwood grove.
Wildlife Picture Index
The One Tam partner agencies are using motion-activated cameras to study wildlife on public lands around Mt. Tam.

All Programs & Projects

What People Say

I walk out of this program with more perspective and a powerful mindset, to get out there and make a change. The One Tam LINC high school program made me realize that this is exactly what I want to do with my life: be outdoors and explore, while at the same time giving back to my community.
Nhi Nguyen
LINC 2018 Student
The mountain gives to all of us selflessly and constantly. The challenge is for each of us to consider in what way we can repay the generosity. Invent something, donate, pull weeds, shore up trails, volunteer with One Tam and you will become a Tamalpaian.
Peter Coyote
Co-author and Narrator, The Invisible Peak