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Friends of Trione-Annadel State Park
P.O. Box 1011 Kenwood, CA 95452
General Email: info@friendsoftrione-annadel.org
Looking to contact our Board President directly? Email president@friendsoftrione-annadel.org
Our map bandanas are for sale at the following locations in Santa Rosa:
Friends of Trione-Annadel supports Trione-Annadel State Park through fundraising and volunteer support. Please route all other inquires (science collection permits, park observations, lost and found, etc.) to the Park directly at (707) 539-3911.
Upcoming Events
RTA Volunteer Workday – Pig Flat & Ridge Trail
October 14, 2026, 9 AM-1:30 PM – Warren Richardson parking lot, Trione-Annadel State Park
RTA Volunteer Workday – Lawndale Trail
October 24, 2026, 9 AM-1:30 PM – Lawndale parking lot, Trione-Annadel State Park
Blacklight Hike with Old Caz
October 24, 2026, 6-8:30 PM – Visitor Center on Channel Drive, Trione-Annadel State Park
40th Annual Annadel Loop
November 1, 2026, 8 AM – Warren Richardson parking lot, Trione-Annadel State Park
Annadel Classic Revival XC Race
November 15, 2026, 7 AM-4 PM – Oak Knolls Picnic Area, Spring Lake Regional Park
Newty November Celebration
December 5, 2026, Time TBD – Location TBD
Annadel Half Marathon/10K/5K
April 17, 2027, 9 AM – Oak Knolls Picnic Area, Spring Lake Regional Park