Christopher McCandless / Alexander Supertramp 埃米尔·赫希

Billie McCandless 马西娅·盖伊·哈登

Walt McCandless 威廉·赫特

Carine McCandless / Additional Narration (voice) 吉娜·马隆

Rainey 布莱恩 H·迪尔克

Jan Burres 凯瑟琳·基纳

Wayne Westerberg 文斯·沃恩

Tracy Tatro 克里斯汀·斯图尔特

Ronald "Ron" Franz 哈尔·霍尔布鲁克

Mads 图尔·林德哈特

Sonja Signe Egholm Olsen

Jim Gallien Jim Gallien

Graduation Reader James J. O'Neill

Waitress Malinda McCollum

Building Manager Paul Knauls

Kevin 扎克·加利费安纳基斯

Wayne's Crew #1 Craig Mutsch

Wayne's Crew #2 Jim Beidler

Hutterite #1 John Decker

Hutterite #2 John Hofer

Hutterite #3 Jerry Hofer

Hutterite #4 Terry Waldner

Gail Borah Robin Mathews

Bar Girl Candice Campos

Lee's Ferry Ranger Steven Wiig

Man In Phone Booth Floyd Wall

Christopher McCandless (age 4) Bryce Walters

Immigration Officer Jim Davis

Social Worker 谢丽尔·弗朗西斯·哈灵顿

Bull 罗伊·达纳·考尔

Carine McCandless (age 11) Haley Ramm

Lori 梅里特·维沃

Insane Cain Everett 'Insane Wayne' Smith

Announcer John Jabaley

Leonard Knight Leonard Knight

Book Shopper #1 Matt Contreras

Book Shopper #2 Denise Sitton

Additional Narration (voice) Sharon Olds

Additional Narration (voice) Carine McCandless

Tourist (uncredited) J. Nathan Simmons

Young Boy (voice) (uncredited) Parris Mosteller

Atlanta Braves fan (uncredited) Timothy Levine

Bank Teller (uncredited) Haley Sweet

Big Wheel Boy (uncredited) Aaron Wayne Hill

Bear Bart the Bear 2