Emile Hirsch
Christopher McCandless / Alexander Supertramp
Marcia Gay Harden
Billie McCandless
William Hurt
Walt McCandless
Jena Malone
Carine McCandless / Additional Narration (voice)
Brian H. Dierker
Rainey
Catherine Keener
Jan Burres
Vince Vaughn
Wayne Westerberg
Kristen Stewart
Tracy Tatro
Hal Holbrook
Ronald "Ron" Franz
Thure Lindhardt
Mads
Signe Egholm Olsen
Sonja
Zach Galifianakis
Kevin
Steven Wiig
Lee's Ferry Ranger
Cheryl Francis Harrington
Social Worker
R. D. Call
Bull
Haley Ramm
Carine McCandless (age 11)
Merritt Wever
Lori
John Jabaley
Announcer
Leonard Knight
Leonard Knight
J. Nathan Simmons
Tourist (uncredited)
Haley Sweet
Bank Teller (uncredited)
Bart the Bear II
Bear
Jim Gallien
Jim Gallien
James J. O'Neill
Graduation Reader
Malinda McCollum
Waitress
Paul Knauls
Building Manager
Craig Mutsch
Wayne's Crew #1
Jim Beidler
Wayne's Crew #2
John Decker
Hutterite #1
John Hofer
Hutterite #2
Jerry Hofer
Hutterite #3
Terry Waldner
Hutterite #4
Robin Mathews
Gail Borah
Candice Campos
Bar Girl
Floyd Wall
Man In Phone Booth
Bryce Walters
Christopher McCandless (age 4)
Jim Davis
Immigration Officer
Everett 'Insane Wayne' Smith
Insane Cain
Matt Contreras
Book Shopper #1
Denise Sitton
Book Shopper #2
Sharon Olds
Additional Narration (voice)
Carine McCandless
Additional Narration (voice)
Parris Mosteller
Young Boy (voice) (uncredited)
Timothy Levine
Atlanta Braves fan (uncredited)
Aaron Wayne Hill
Big Wheel Boy (uncredited)
