From SF Bike Coalition: 2013 is the year our local National Park achieves self-sufficiency. Has the Presidio Trust found a sustainable way to combine history, nature, and commerce? This tour will criss-cross the park’s 1,500 acres, including brief off-road segments of the Bay Trail. Ends with a picnic (bring water and food to share). Free […]

"The transformation of the Presidio is accelerating, and changes to the forests, natural areas, architecture, and bike paths are worth a close up look. This tour of the Presidio’s backroads is led by a Natural Areas program volunteer and SFBC member. Easy ride on pavement – be prepared to ascend twice to the Presidio’s ridge […]

"This trip through San Francisco’s lost sand dunes, ponds, creeks and coastline will focus on the city from downtown north, covering the heart of the city, the waterfront and Yerba Buena cove, Telegraph Hill, Black Point, and Crissy Field in the Presidio… It’s a social, historical and critical 4-hour tour through the city’s ecological past […]

"This trip through San Francisco’s lost sand dunes, ponds, creeks and coastline will focus on the city from downtown north, covering the heart of the city, the waterfront and Yerba Buena cove, Telegraph Hill, Black Point, and Crissy Field in the Presidio… It’s a social, historical and critical 4-hour tour through the city’s ecological past […]

"Join this bike ride to observe some of the threatened flora and fauna dwelling in the wild northwestern corner of San Francisco. Travel to a few locations and check in on a variety of imperiled birds, animals, and plants before ending at the Sports Basement in the Presidio for a kick-off party for the 2010 […]