Simple Serenity
Annual COSA Northern California Retreat
Join us for a weekend of recovery and fellowship
the weekend of October 9th 2026
The COSA Simple Serenity Retreat is a weekend event held in northern California, for COSA members to share their stories, their recovery, and their support with each other over the course of a weekend in a cozy retreat environment. Past retreats have included 12-Step meetings, speakers, workshops, fellowship, delicious meals, and opportunities for meditation, crafting, and communing with nature.
This 20th annual retreat will be held once again at St. Dorothy's Rest in Occidental California. The program will begin on Friday evening October 9th with sessions and activities through lunch on Sunday, October 11th. For participants who wish to extend their weekend away, this year there is an option to stay over Sunday night and depart Monday after breakfast.
Registration will close September 7th, 3pm Pacific time
We look forward to seeing you at the retreat!
COSA has no affiliation with the St. Dorothy's organization and, in keeping with the Sixth Tradition of COSA, does not specifically endorse any outside groups.