• Stay up to date with what’s happening on the mountain!

Calendar

Calendar

Featured Events

  • Sunday, December 21, 2025 — 9am – 12pm
    Restoration at Hal Brown Park
    Marin County Parks
    Be a part of a successful 15-year community-based effort to restore habitat at a site once dominated by weeds and nonnative grasses—activities include weeding, planting, and more. Appropriate for ages 10 and older. We’ll provide snacks and water. Bring gloves and a water bottle. No pets are allowed, except for service/companion animals. Adverse weather or poor air quality may cancel. Check the calendar or call/text (415) 763-2977 two hours before the event to confirm the status. Registration is required
  • Sunday, December 21, 2025
    CANCELLED - Sunrise Solstice Hike
    Source: Marin County Parks
    Sunday, December 21, 2025, 7 – 8:30am
  • Tuesday, December 30, 2025 — 9am - 12pm
    Rooted in Connection Guided Hike: Restorative Fire

This calendar combines events from all five One Tam partners. Please confirm details before attending. If you require an accommodation to participate in an event, please contact the host organization.

Search by Text

Narrow search to calendar events only by choosing "Advanced Search" and checking "Events" on results page.

Upcoming Events

  • Doggone Ugly Sweater Walk
    Source: Marin County Parks
    Terra Linda/Sleepy Hollow Preserve
    Saturday, December 20, 2025, 10am – 12pm
  • 9am – 12pm
    Restoration at Hal Brown Park
    Marin County Parks

    Be a part of a successful 15-year community-based effort to restore habitat at a site once dominated by weeds and nonnative grasses—activities include weeding, planting, and more. Appropriate for ages 10 and older.

  • Habitat Restoration Team
    Source: One Tam Calendar

    When: Sundays, 9:30 am–2:30 pm

    Where: Marin county; specific meeting location will be in the confirmation email after registering

  • Stafford Lake Birds
    Source: Marin County Parks
    Stafford Lake Park
    Sunday, December 21, 2025, 10am – 2pm
  • Blackstone Canyon
    Source: Marin County Parks
    Marinwood
    Tuesday, December 23, 2025, 10am – 12pm
  • Invasive Plant Patrol
    Source: One Tam Calendar

    When: Wednesdays, 10 am–2:30 pm; Registration Required

    Where: Marin county; specific meeting location will be in the confirmation email after registering

  • Fungus Among Us
    Source: Marin County Parks
    Indian Tree Preserve
    Friday, December 26, 2025, 10am – 1pm
  • Habitat Restoration Team
    Source: One Tam Calendar

    When: Sundays, 9:30 am–2:30 pm

    Where: Marin county; specific meeting location will be in the confirmation email after registering