Outdoor & Recreation groups in Rockland County.

Monthly programs September through June plus year-round bird walks and field trips -- see the Audubon events page for the current schedule.

Established in 1947 as a chapter of the National Audubon Society, Rockland Audubon is a nonprofit dedicated to the appreciation of nature and the preservation of a healthy environment. The chapter runs free bird walks, field trips, monthly programs, and habitat-stewardship work across Rockland.

Monthly public meeting (online) plus regular hikes and conservation events; current calendar on the Lower Hudson Group site.

The Rockland branch of the Sierra Club Lower Hudson Group, covering Westchester, Rockland, and Putnam counties. Runs group hikes, conservation advocacy, monthly public meetings, and Member-Group outings with the NY-NJ Trail Conference.

Volunteer trail crews, public hikes, and stewardship events scheduled year-round -- see the Trail Conference calendar.

A volunteer-powered nonprofit that builds, maintains, and protects 2,000+ miles of public trails across New York and New Jersey, including the trails of Harriman, Bear Mountain, Hook Mountain, and the Long Path through Rockland. Volunteers can join trail crews, conservation projects, and member-group hikes.