This short trail takes visitors on a boardwalk across the Crissy Marsh, an essential feature of Crissy Field's dramatic, community-powered transformation in 2001. Today, you'll pass through beautifully restored wildlife habitat and have a chance to see several species of waterbirds, including the majestic great egret.  

This short connector trail, lined by lovely trees, links the Mason Street bike path to the east Crissy Field parking area. It'll take you by Crissy Field Center, the Parks Conservancy's urban environmental education center in partnership with the National Park Service and Presidio Trust.

This access trail to Rancho Corral de Tierra connects visitors with the Spine Trail. Along the way, it takes visitors past the Ember Ridge Equestrian Center; you're free to look but please don't disturb the horses (or the staff!).

Located in the Marin Headlands north of Rodeo Lagoon, Fort Cronkhite is a former World War II military post that stands at the edge of the Pacific Ocean. Fort Cronkhite is one of the few examples of these World War II "mobilization posts" remaining in the country.

To get to the trailhead, you'll need to make your way into the Green Gulch Farm. Go past the left side of the farm, and you'll start an ascent.

This short trail segment connects Rodeo Beach with Battery Alexander, one of five powerful batteries built by the U.S. Army around the turn of the 20th century. Those guns, manned by soldiers at nearby Fort Barry, were emblematic of the "Endicott Period" of coastal defense technology.