Emile Hirsch

as Jay Sebring

as Christopher McCandless / Alexander Supertramp

as Austin Tilden

as Petty Officer Second Class Danny Dietz

as Matthew Kidman

as Cleve Jones

as Spin

as Speed

as Chris Smith

as Sean

as Johnny Truelove

as Dad

as Darryl

as Jim Lake Jr. (voice)

as Chad Kottmeier

as Jay

as Paulie Bowers

as Punk

as Cardillo

as Byron Crawford

as Billy

as Diego

as Tony

as Sedgewick Bell

as Jim (voice)

as James Moore

as Jim (voice)

Role: Story

as Grun

as Lance

as Paul

as Martin

as Self

as Patrick Tate

as Self

as Jack Turner

as Bryce Banks

as Francis Doyle

as Adam

as Johnny

Role: Story

as Lance Foster

as Self - Guest

as Clyde Barrow

as Michael

as Shane Danger

as Tim Travis

as Duncan Mudge

as Vincent Stewart

as Etan

as Donald

as Bobby Belucci

as Frank

as Bryce Banks

as Rick Calloway

as Michael Rubino

as Peel

as Victor

as Walden Dean

as Dean

as Stephen

as Abel

as Jeremy

as Brandon Ellway

as Joseph Bau

as Young Houdini

as Andy

as Self

as Lonnie Bravard

as Adam

as Narrator (voice)

as Self

as Self

as Brad

as Speed Racer

as Benny

as Mr. Shanker

as Self