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