Learn tips and techniques for hiking three major U.S. long-distance trails: the Appalachian Trail, the Continental Divide Trail and the Pacific Crest Trail — a 7,900-plus-mile feat that fewer than 200 people have achieved.
When, where: 7 p.m. Friday at the Adventure 16 store, 11161 W. Pico Blvd., Los Angeles
Admission, info: Free. (310) 473-4574.
As part of the Old Pasadena Film Festival, Distant Lands is presenting "Tracks," an adaptation of Robyn Davidson's memoir of the same name, chronicling her nine-month journey across the deserts of west Australia.
When, where: 8 p.m. Friday at Distant Lands, 20 S. Raymond Ave., Pasadena
Admission, info: Free. Space is limited; RSVP to (626) 449-3220.
Discover the hidden world of the Salinas de San Pedro salt marsh and the local native plants and animals.
When, where: 1-3 p.m. July 12 at the Cabrillo Marine Aquarium, 3720 Stephen M. White Drive, San Pedro.
Admission, info: Free. (310) 548-7562.