Calendar
Featured Events
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.
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Upcoming Events
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Source: Marin County ParksBaltimore Canyon Preserve
Tuesday, April 7, 2026, 10am – 2pm -
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Source: Marin County ParksRing Mountain Preserve
Saturday, April 11, 2026, 11:30am – 1:30pm -
Source: Marin County ParksCamino Alto Preserve
Sunday, April 12, 2026, 10am – 12pm -
Source: Marin County ParksRing Mt Preserve
Wednesday, April 15, 2026, 10am – 2pm -
Source: Marin County ParksMount Burdell Preserve
Saturday, April 18, 2026, 8am – 12pm -
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Source: Marin County ParksRocky Graham Park
Saturday, April 18, 2026, 1 – 2:30pm -
Source: One Tam Calendar
Providing us with drinking water, incredible trails, habitat for beloved species, and so much more: Mt. Tam provides so much for so many communities. This Earth Day, it is our turn to put our gratitude into action and give back to Mt.
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Source: One Tam Calendar
In partnership with OneTam, celebrate the City Nature Challenge by joining us for a Spring Flowers and Fire Bioblitz at Bo
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9am - 2pmMarin Water Volunteer Events Calendar
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