Kristen Stewart Tracy Tatro
Jena Malone Carine McCandless / Additional Narration (voice)
Catherine Keener Jan Burres
Sean Penn Producer, Screenplay, Director
Jack Nicholson Thanks
Marcia Gay Harden Billie McCandless
Vince Vaughn Wayne Westerberg
Zach Galifianakis Kevin
Merritt Wever Lori
William Hurt Walt McCandless
Emile Hirsch Christopher McCandless / Alexander Supertramp
Hal Holbrook Ronald "Ron" Franz
Michael Minkler Sound Re-Recording Mixer
Haley Ramm Carine McCandless (age 11)
Thure Lindhardt Mads
Eddie Vedder Music, Songs
Signe Egholm Olsen Sonja
R. D. Call Bull
Francine Maisler Casting
Bill Pohlad Producer
Brian H. Dierker Rainey
Martín Hernández Supervising Sound Editor, Sound Designer
Jon Krakauer Book, Thanks
Cole S. McKay Stunts
Lora Hirschberg Sound Re-Recording Mixer
Art Linson Producer
Gary Archer Prosthetics
David Blocker Executive Producer
Éric Gautier Director of Photography
Kathy Driscoll-Mohler Casting Associate
Cheryl Francis Harrington Social Worker
Robin Mathews Gail Borah, Makeup Department Head
Derek R. Hill Production Design
Christopher Barnett Sound Effects Editor
Steven Wiig Lee's Ferry Ranger
Arturo Zarate Sound Effects Editor
John J. Kelly Executive Producer
Mary Claire Hannan Costume Design
David Webb Assistant Director
Mychael Bates Property Master
Chris Regan Color Timer
Parris Mosteller Young Boy (voice) (uncredited)
Jay Cassidy Editor
Domenic Silvestri Art Direction
Sterfon Demings Hair Department Head
Kaki King Music
Luca Kouimelis Script Supervisor
Mike Smithson Makeup Artist
Frank Hildebrand Executive Producer
Bart the Bear 2 Bear
Leonard Knight Leonard Knight
Lauren Grey Casting Associate
John Jabaley Announcer
Gary J. Wayton Stunts
Nerses Gezalyan Sound Mixer
Edward Tise Sound Mixer
Chuck Zlotnick Still Photographer
John R. Saunders Assistant Director
Haley Sweet Bank Teller (uncredited), Production Supervisor
J. Nathan Simmons Tourist (uncredited)
Danielle Berman Set Decoration
Jacques Jouffret Steadicam Operator
Critter Pierce Set Costumer
Brinton Bryan Second Unit
Aaron Wayne Hill Big Wheel Boy (uncredited)
Donald Frazee Special Effects Supervisor
Michael Brook Original Music Composer
Lyn Matsuda Norton Script Supervisor
David Franco Music Supervisor
Steve Hart Stunts
Candice Campos Bar Girl
Doug Seus Stunt Coordinator